diff --git a/manifests/agents/dhcp.pp b/manifests/agents/dhcp.pp
index 8bd73d33c..3ffe1a968 100644
--- a/manifests/agents/dhcp.pp
+++ b/manifests/agents/dhcp.pp
@@ -64,6 +64,11 @@
 #  (optional) Use broadcast in DHCP replies
 #  Defaults to $::os_service_default.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the dhcp config.
+#   Defaults to false.
+#
 # === Deprecated Parameters
 #
 # [*dhcp_delete_namespaces*]
@@ -96,6 +101,7 @@ class neutron::agents::dhcp (
   $enable_force_metadata    = $::os_service_default,
   $enable_metadata_network  = false,
   $dhcp_broadcast_reply     = $::os_service_default,
+  $purge_config             = false,
   # DEPRECATED PARAMETERS
   $dhcp_delete_namespaces   = $::os_service_default,
   $dhcp_domain              = $::os_service_default,
@@ -130,6 +136,10 @@ class neutron::agents::dhcp (
     }
   }
 
+  resources { 'neutron_dhcp_agent_config':
+    purge => $purge_config,
+  }
+
   # The DHCP agent loads both neutron.ini and its own file.
   # This only lists config specific to the agent.  neutron.ini supplies
   # the rest.
diff --git a/manifests/agents/l3.pp b/manifests/agents/l3.pp
index 8fd561459..6387ee855 100644
--- a/manifests/agents/l3.pp
+++ b/manifests/agents/l3.pp
@@ -90,6 +90,11 @@
 # [*allow_automatic_l3agent_failover*]
 #   DEPRECATED: Has no effect in this class. Use the same parameter in neutron::server instead.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the l3 config.
+#   Defaults to false.
+#
 # === Deprecated Parameters
 #
 # [*use_namespaces*]
@@ -126,6 +131,7 @@ class neutron::agents::l3 (
   $ha_vrrp_auth_password            = $::os_service_default,
   $ha_vrrp_advert_int               = '3',
   $agent_mode                       = 'legacy',
+  $purge_config                     = false,
   # DEPRECATED PARAMETERS
   $allow_automatic_l3agent_failover = false,
   $use_namespaces                   = $::os_service_default,
@@ -150,6 +156,10 @@ class neutron::agents::l3 (
     warning('parameter router_delete_namespaces was removed in Mitaka, it does not take any affect')
   }
 
+  resources { 'neutron_l3_agent_config':
+    purge => $purge_config,
+  }
+
   if $ha_enabled {
     neutron_l3_agent_config {
       'DEFAULT/ha_vrrp_auth_type':     value => $ha_vrrp_auth_type;
diff --git a/manifests/agents/lbaas.pp b/manifests/agents/lbaas.pp
index 64434ec60..3fe3dc488 100644
--- a/manifests/agents/lbaas.pp
+++ b/manifests/agents/lbaas.pp
@@ -32,6 +32,11 @@
 #   Disable this if you are using the puppetlabs-haproxy module
 #   Defaults to true
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the lbaas config.
+#   Defaults to false.
+#
 # === Deprecated Parameters
 #
 # [*use_namespaces*]
@@ -49,6 +54,7 @@ class neutron::agents::lbaas (
   $device_driver          = 'neutron_lbaas.services.loadbalancer.drivers.haproxy.namespace_driver.HaproxyNSDriver',
   $user_group             = $::neutron::params::nobody_user_group,
   $manage_haproxy_package = true,
+  $purge_config           = false,
   # DEPRECATED PARAMETERS
   $use_namespaces         = $::os_service_default,
 ) {
@@ -70,6 +76,10 @@ class neutron::agents::lbaas (
     }
   }
 
+  resources { 'neutron_lbaas_agent_config':
+    purge => $purge_config,
+  }
+
   # The LBaaS agent loads both neutron.ini and its own file.
   # This only lists config specific to the agent.  neutron.ini supplies
   # the rest.
diff --git a/manifests/agents/metadata.pp b/manifests/agents/metadata.pp
index 48e934d9f..6b15bfe13 100644
--- a/manifests/agents/metadata.pp
+++ b/manifests/agents/metadata.pp
@@ -56,6 +56,11 @@
 #   Set to 0 will cause cache entries to never expire.
 #   Set to $::os_service_default or false to disable cache.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the metadata config.
+#   Defaults to false.
+#
 # === Deprecated Parameters
 # [*auth_password*]
 #   (required) The password for the administrative user (Defaults to undef).
@@ -91,6 +96,7 @@ class neutron::agents::metadata (
   $metadata_memory_cache_ttl = $::os_service_default,
   $nova_client_cert          = $::os_service_default,
   $nova_client_priv_key      = $::os_service_default,
+  $purge_config              = false,
   # DEPRECATED PARAMETERS
   $auth_password             = undef,
   $auth_tenant               = undef,
@@ -129,6 +135,10 @@ class neutron::agents::metadata (
     warning('The auth_region parameter is deprecated and was removed in Mitaka release.')
   }
 
+  resources { 'neutron_metadata_agent_config':
+    purge => $purge_config,
+  }
+
   neutron_metadata_agent_config {
     'DEFAULT/debug':                          value => $debug;
     'DEFAULT/auth_ca_cert':                   value => $auth_ca_cert;
diff --git a/manifests/agents/metering.pp b/manifests/agents/metering.pp
index b86751a7c..f84fc9c66 100644
--- a/manifests/agents/metering.pp
+++ b/manifests/agents/metering.pp
@@ -48,6 +48,11 @@
 #   (optional) Interval between two metering reports.
 #   Defaults to 300.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the metering config.
+#   Defaults to false.
+#
 # === Deprecated Parameters
 #
 # [*use_namespaces*]
@@ -66,6 +71,7 @@ class neutron::agents::metering (
   $driver           = 'neutron.services.metering.drivers.noop.noop_driver.NoopMeteringDriver',
   $measure_interval = $::os_service_default,
   $report_interval  = $::os_service_default,
+  $purge_config     = false,
   # DEPRECATED PARAMETERS
   $use_namespaces   = $::os_service_default,
 ) {
@@ -75,6 +81,10 @@ class neutron::agents::metering (
   Neutron_config<||>                ~> Service['neutron-metering-service']
   Neutron_metering_agent_config<||> ~> Service['neutron-metering-service']
 
+  resources { 'neutron_metering_agent_config':
+    purge => $purge_config,
+  }
+
   # The metering agent loads both neutron.ini and its own file.
   # This only lists config specific to the agent.  neutron.ini supplies
   # the rest.
diff --git a/manifests/agents/ml2/linuxbridge.pp b/manifests/agents/ml2/linuxbridge.pp
index d8e2e99f5..63ed8ff06 100644
--- a/manifests/agents/ml2/linuxbridge.pp
+++ b/manifests/agents/ml2/linuxbridge.pp
@@ -58,6 +58,11 @@
 #   (optional) Firewall driver for realizing neutron security group function.
 #   Defaults to 'neutron.agent.linux.iptables_firewall.IptablesFirewallDriver'.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the linuxbridge config.
+#   Defaults to false.
+#
 class neutron::agents::ml2::linuxbridge (
   $package_ensure   = 'present',
   $enabled          = true,
@@ -70,7 +75,8 @@ class neutron::agents::ml2::linuxbridge (
   $polling_interval = $::os_service_default,
   $l2_population    = $::os_service_default,
   $physical_interface_mappings = [],
-  $firewall_driver  = 'neutron.agent.linux.iptables_firewall.IptablesFirewallDriver'
+  $firewall_driver  = 'neutron.agent.linux.iptables_firewall.IptablesFirewallDriver',
+  $purge_config     = false,
 ) {
 
   validate_array($tunnel_types)
@@ -80,6 +86,10 @@ class neutron::agents::ml2::linuxbridge (
 
   Neutron_agent_linuxbridge<||> ~> Service['neutron-plugin-linuxbridge-agent']
 
+  resources { 'neutron_agent_linuxbridge':
+    purge => $purge_config,
+  }
+
   if ('vxlan' in $tunnel_types) {
 
     if ! $local_ip {
diff --git a/manifests/agents/ml2/ovs.pp b/manifests/agents/ml2/ovs.pp
index b8f4ed8ac..745d9ee47 100644
--- a/manifests/agents/ml2/ovs.pp
+++ b/manifests/agents/ml2/ovs.pp
@@ -134,6 +134,11 @@
 #   Allowed values: ovs-ofctl, native
 #   Defaults to $::os_service_default
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the ovs config.
+#   Defaults to false.
+#
 class neutron::agents::ml2::ovs (
   $package_ensure             = 'present',
   $enabled                    = true,
@@ -160,6 +165,7 @@ class neutron::agents::ml2::ovs (
   $datapath_type              = $::os_service_default,
   $vhostuser_socket_dir       = $::os_service_default,
   $ovsdb_interface            = $::os_service_default,
+  $purge_config               = false,
 ) {
 
   include ::neutron::params
@@ -183,6 +189,10 @@ class neutron::agents::ml2::ovs (
 
   Neutron_agent_ovs<||> ~> Service['neutron-ovs-agent-service']
 
+  resources { 'neutron_agent_ovs':
+    purge => $purge_config,
+  }
+
   if ($bridge_mappings != []) {
     # bridge_mappings are used to describe external networks that are
     # *directly* attached to this machine.
diff --git a/manifests/agents/ml2/sriov.pp b/manifests/agents/ml2/sriov.pp
index ca32ed858..51d051f12 100644
--- a/manifests/agents/ml2/sriov.pp
+++ b/manifests/agents/ml2/sriov.pp
@@ -56,6 +56,11 @@
 #   (optional) Extensions list to use
 #   Defaults to $::os_service_default
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the sriov config.
+#   Defaults to false.
+#
 class neutron::agents::ml2::sriov (
   $package_ensure             = 'present',
   $enabled                    = true,
@@ -64,12 +69,17 @@ class neutron::agents::ml2::sriov (
   $polling_interval           = 2,
   $exclude_devices            = [],
   $extensions                 = $::os_service_default,
+  $purge_config               = false,
 ) {
 
   include ::neutron::params
 
   Neutron_sriov_agent_config <||> ~> Service['neutron-sriov-nic-agent-service']
 
+  resources { 'neutron_sriov_agent_config':
+    purge => $purge_config,
+  }
+
   neutron_sriov_agent_config {
     'sriov_nic/polling_interval':         value => $polling_interval;
     'sriov_nic/exclude_devices':          value => join($exclude_devices, ',');
diff --git a/manifests/agents/vpnaas.pp b/manifests/agents/vpnaas.pp
index 1dcaa08d5..a00b6f372 100644
--- a/manifests/agents/vpnaas.pp
+++ b/manifests/agents/vpnaas.pp
@@ -40,6 +40,11 @@
 # [*ipsec_status_check_interval*]
 #   (optional) Status check interval. Defaults to $::os_service_default.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the vpnaas config.
+#   Defaults to false.
+#
 # === Deprecated Parameters
 #
 # [*external_network_bridge*]
@@ -52,7 +57,8 @@ class neutron::agents::vpnaas (
   $vpn_device_driver           = 'neutron.services.vpn.device_drivers.ipsec.OpenSwanDriver',
   $interface_driver            = 'neutron.agent.linux.interface.OVSInterfaceDriver',
   $external_network_bridge     = $::os_service_default,
-  $ipsec_status_check_interval = $::os_service_default
+  $ipsec_status_check_interval = $::os_service_default,
+  $purge_config                = false,
 ) {
 
   include ::neutron::params
@@ -84,6 +90,10 @@ class neutron::agents::vpnaas (
     }
   }
 
+  resources { 'neutron_vpnaas_agent_config':
+    purge => $purge_config,
+  }
+
   # The VPNaaS agent loads both neutron.ini and its own file.
   # This only lists config specific to the agent.  neutron.ini supplies
   # the rest.
diff --git a/manifests/init.pp b/manifests/init.pp
index cbab16e08..b643237fc 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -248,6 +248,11 @@
 #   by the user executing the agent
 #   Defaults to: '$state_path/lock'
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the neutron config.
+#   Defaults to false.
+#
 # DEPRECATED PARAMETERS
 #
 # [*qpid_hostname*]
@@ -321,6 +326,7 @@ class neutron (
   $log_dir                            = '/var/log/neutron',
   $state_path                         = $::os_service_default,
   $lock_path                          = '$state_path/lock',
+  $purge_config                       = false,
   # DEPRECATED PARAMETERS
   $qpid_hostname                      = undef,
   $qpid_port                          = undef,
@@ -383,6 +389,10 @@ class neutron (
   # Make sure all services get restarted if neutron-common package is upgraded
   Package['neutron'] ~> Service<| tag == 'neutron-service' |>
 
+  resources { 'neutron_config':
+    purge => $purge_config,
+  }
+
   neutron_config {
     'DEFAULT/verbose':                 value => $verbose;
     'DEFAULT/debug':                   value => $debug;
diff --git a/manifests/plugins/cisco.pp b/manifests/plugins/cisco.pp
index 07c6a8847..4b78573b3 100644
--- a/manifests/plugins/cisco.pp
+++ b/manifests/plugins/cisco.pp
@@ -81,6 +81,11 @@
 #  (optional) the ensure state of the package resource
 #  Defaults to 'present'
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the cisco config.
+#   Defaults to false.
+#
 # Other parameters are currently not used by the plugin and
 # can be left unchanged, but in grizzly the plugin will fail
 # to launch if they are not there. The config for Havana will
@@ -112,7 +117,8 @@ class neutron::plugins::cisco(
   $max_port_profiles = '65568',
   $manager_class     = 'neutron.plugins.cisco.segmentation.l2network_vlan_mgr_v2.L2NetworkVLANMgr',
   $max_networks      = '65568',
-  $package_ensure    = 'present'
+  $package_ensure    = 'present',
+  $purge_config      = false,
 )
 {
   Neutron_plugin_cisco<||> ~> Service['neutron-server']
@@ -161,6 +167,22 @@ class neutron::plugins::cisco(
     tag    => 'openstack',
   }
 
+  # Setting purge for all configs
+  resources { 'neutron_plugin_cisco':
+    purge => $purge_config,
+  }
+
+  resources { 'neutron_plugin_cisco_db_conn':
+    purge => $purge_config,
+  }
+
+  resources { 'neutron_plugin_cisco_l2network':
+    purge => $purge_config,
+  }
+
+  resources { 'neutron_plugin_cisco_credentials':
+    purge => $purge_config,
+  }
 
   neutron_plugin_cisco {
     'PLUGINS/nexus_plugin' : value => $nexus_plugin;
diff --git a/manifests/plugins/midonet.pp b/manifests/plugins/midonet.pp
index fce255820..96d554629 100644
--- a/manifests/plugins/midonet.pp
+++ b/manifests/plugins/midonet.pp
@@ -25,6 +25,11 @@
 #   Whether 'midonet-db-manage' should run to create and/or syncrhonize the database
 #   with MidoNet specific tables. Defaults to false
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the midonet config.
+#   Defaults to false.
+#
 # === Examples
 #
 # An example call would be:
@@ -72,7 +77,8 @@ class neutron::plugins::midonet (
   $keystone_username = 'neutron',
   $keystone_password = $::os_service_default,
   $keystone_tenant   = 'services',
-  $sync_db           = false
+  $sync_db           = false,
+  $purge_config      = false,
 ) {
 
   include ::neutron::params
@@ -94,6 +100,10 @@ class neutron::plugins::midonet (
     Package['neutron'] -> Neutron_plugin_midonet<||>
   }
 
+  resources { 'neutron_plugin_midonet':
+    purge => $purge_config,
+  }
+
   neutron_plugin_midonet {
     'MIDONET/midonet_uri':  value => "http://${midonet_api_ip}:${midonet_api_port}/midonet-api";
     'MIDONET/username':     value => $keystone_username;
diff --git a/manifests/plugins/ml2.pp b/manifests/plugins/ml2.pp
index 689b9c558..353286928 100644
--- a/manifests/plugins/ml2.pp
+++ b/manifests/plugins/ml2.pp
@@ -124,6 +124,11 @@
 #   encapsulated traffic is sent.
 #   Defaults to 0.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the ml2 config.
+#   Defaults to false.
+#
 
 class neutron::plugins::ml2 (
   $type_drivers              = ['local', 'flat', 'vlan', 'gre', 'vxlan'],
@@ -142,6 +147,7 @@ class neutron::plugins::ml2 (
   $sriov_agent_required      = false,
   $physical_network_mtus     = $::os_service_default,
   $path_mtu                  = 0,
+  $purge_config              = false,
 ) {
 
   include ::neutron::params
@@ -197,6 +203,10 @@ class neutron::plugins::ml2 (
     Package['neutron'] -> Neutron_plugin_sriov<||>
   }
 
+  resources { 'neutron_plugin_ml2':
+    purge => $purge_config,
+  }
+
   neutron::plugins::ml2::type_driver { $type_drivers:
     flat_networks       => $flat_networks,
     tunnel_id_ranges    => $tunnel_id_ranges,
diff --git a/manifests/plugins/nuage.pp b/manifests/plugins/nuage.pp
index 9ed703a1a..84ccb6509 100644
--- a/manifests/plugins/nuage.pp
+++ b/manifests/plugins/nuage.pp
@@ -34,6 +34,10 @@
 #   (optional) Flag to determine whether to use ssl connection
 #   to connect to VSD. The default is True
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the nuage config.
+#   Defaults to false.
 #
 class neutron::plugins::nuage (
   $nuage_net_partition_name,
@@ -45,6 +49,7 @@ class neutron::plugins::nuage (
   $nuage_cms_id,
   $nuage_auth_resource    = '/me',
   $nuage_server_ssl       = true,
+  $purge_config           = false,
 ) {
 
   include ::neutron::params
@@ -83,6 +88,10 @@ class neutron::plugins::nuage (
     mode    => '0640'
   }
 
+  resources { 'neutron_plugin_nuage':
+    purge => $purge_config,
+  }
+
   $nuage_base_uri_base = '/nuage/api'
   neutron_plugin_nuage {
     'RESTPROXY/default_net_partition_name': value => $nuage_net_partition_name;
diff --git a/manifests/plugins/nvp.pp b/manifests/plugins/nvp.pp
index 6db315526..328a862b1 100644
--- a/manifests/plugins/nvp.pp
+++ b/manifests/plugins/nvp.pp
@@ -25,13 +25,19 @@
 #   (optional) Ensure state for package.
 #   Defaults to 'present'.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the nvp config.
+#   Defaults to false.
+#
 class neutron::plugins::nvp (
   $default_tz_uuid,
   $nvp_controllers,
   $nvp_user,
   $nvp_password,
   $default_l3_gw_service_uuid = $::os_service_default,
-  $package_ensure    = 'present'
+  $package_ensure    = 'present',
+  $purge_config      = false,
 ) {
 
   include ::neutron::params
@@ -48,6 +54,10 @@ class neutron::plugins::nvp (
 
   validate_array($nvp_controllers)
 
+  resources { 'neutron_plugin_nvp':
+    purge => $purge_config,
+  }
+
   neutron_plugin_nvp {
     'DEFAULT/default_tz_uuid':            value => $default_tz_uuid;
     'DEFAULT/nvp_controllers':            value => join($nvp_controllers, ',');
diff --git a/manifests/plugins/opencontrail.pp b/manifests/plugins/opencontrail.pp
index 47d949032..45c849452 100644
--- a/manifests/plugins/opencontrail.pp
+++ b/manifests/plugins/opencontrail.pp
@@ -47,6 +47,11 @@
 #   (optional) Ensure state for package.
 #   Defaults to 'present'.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the opencontrail config.
+#   Defaults to false.
+#
 class neutron::plugins::opencontrail (
   $api_server_ip              = $::os_service_default,
   $api_server_port            = $::os_service_default,
@@ -58,6 +63,7 @@ class neutron::plugins::opencontrail (
   $keystone_admin_password    = $::os_service_default,
   $keystone_admin_token       = $::os_service_default,
   $package_ensure             = 'present',
+  $purge_config               = false,
 ) {
 
   include ::neutron::params
@@ -105,6 +111,10 @@ class neutron::plugins::opencontrail (
     }
   }
 
+  resources { 'neutron_plugin_opencontrail':
+    purge => $purge_config,
+  }
+
   neutron_plugin_opencontrail {
     'APISERVER/api_server_ip':       value => $api_server_ip;
     'APISERVER/api_server_port':     value => $api_server_port;
diff --git a/manifests/plugins/plumgrid.pp b/manifests/plugins/plumgrid.pp
index e713bd135..ed769d0ec 100644
--- a/manifests/plugins/plumgrid.pp
+++ b/manifests/plugins/plumgrid.pp
@@ -78,6 +78,11 @@
 #   (optional) Ensure state for plugin package.
 #   Defaults to 'present'.
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the plumgrid config.
+#   Defaults to false.
+#
 class neutron::plugins::plumgrid (
   $director_server              = '127.0.0.1',
   $director_server_port         = '443',
@@ -97,7 +102,8 @@ class neutron::plugins::plumgrid (
   $l2gateway_sw_username        = $::os_service_default,
   $l2gateway_sw_password        = $::os_service_default,
   $plumlib_package_ensure       = 'present',
-  $package_ensure               = 'present'
+  $package_ensure               = 'present',
+  $purge_config                 = false,
 ) {
 
   include ::neutron::params
@@ -151,6 +157,14 @@ class neutron::plugins::plumgrid (
     }
   }
 
+  resources { 'neutron_plugin_plumgrid':
+    purge => $purge_config,
+  }
+
+  resources { 'neutron_plumlib_plumgrid':
+    purge => $purge_config,
+  }
+
   neutron_plugin_plumgrid {
     'PLUMgridDirector/director_server':      value => $director_server;
     'PLUMgridDirector/director_server_port': value => $director_server_port;
diff --git a/manifests/services/fwaas.pp b/manifests/services/fwaas.pp
index c87b9c1f7..92772d07a 100644
--- a/manifests/services/fwaas.pp
+++ b/manifests/services/fwaas.pp
@@ -36,11 +36,17 @@
 #   true/false
 #   Defaults to false
 #
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the fwaas config.
+#   Defaults to false.
+#
 
 class neutron::services::fwaas (
   $enabled              = $::os_service_default,
   $driver               = $::os_service_default,
-  $vpnaas_agent_package = false
+  $vpnaas_agent_package = false,
+  $purge_config         = false,
 ) {
 
   include ::neutron::params
@@ -73,6 +79,10 @@ class neutron::services::fwaas (
     })
   }
 
+  resources { 'neutron_fwaas_service_config':
+    purge => $purge_config,
+  }
+
   neutron_fwaas_service_config {
     'fwaas/enabled': value => $enabled;
     'fwaas/driver':  value => $driver;
diff --git a/spec/classes/neutron_agents_dhcp_spec.rb b/spec/classes/neutron_agents_dhcp_spec.rb
index 221d162e7..781c0ac0b 100644
--- a/spec/classes/neutron_agents_dhcp_spec.rb
+++ b/spec/classes/neutron_agents_dhcp_spec.rb
@@ -19,7 +19,8 @@ describe 'neutron::agents::dhcp' do
       :dhcp_driver              => 'neutron.agent.linux.dhcp.Dnsmasq',
       :root_helper              => 'sudo neutron-rootwrap /etc/neutron/rootwrap.conf',
       :enable_isolated_metadata => false,
-      :enable_metadata_network  => false }
+      :enable_metadata_network  => false,
+      :purge_config             => false }
   end
 
   let :test_facts do
@@ -77,6 +78,12 @@ describe 'neutron::agents::dhcp' do
       is_expected.to contain_service('neutron-dhcp-service').that_subscribes_to('Package[neutron]')
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_dhcp_agent_config').with({
+        :purge => false
+      })
+    end
+
     context 'with manage_service as false' do
       before :each do
         params.merge!(:manage_service => false)
diff --git a/spec/classes/neutron_agents_l3_spec.rb b/spec/classes/neutron_agents_l3_spec.rb
index 0911f5268..85a599934 100644
--- a/spec/classes/neutron_agents_l3_spec.rb
+++ b/spec/classes/neutron_agents_l3_spec.rb
@@ -14,7 +14,8 @@ describe 'neutron::agents::l3' do
       :ha_enabled                       => false,
       :ha_vrrp_auth_type                => 'PASS',
       :ha_vrrp_advert_int               => '3',
-      :agent_mode                       => 'legacy' }
+      :agent_mode                       => 'legacy',
+      :purge_config                     => false }
   end
 
   let :test_facts do
@@ -49,6 +50,12 @@ describe 'neutron::agents::l3' do
       is_expected.to contain_neutron_l3_agent_config('DEFAULT/network_device_mtu').with_value('<SERVICE DEFAULT>')
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_l3_agent_config').with({
+        :purge => false
+      })
+    end
+
     it 'installs neutron l3 agent package' do
       if platform_params.has_key?(:l3_agent_package)
         is_expected.to contain_package('neutron-l3').with(
diff --git a/spec/classes/neutron_agents_lbaas_spec.rb b/spec/classes/neutron_agents_lbaas_spec.rb
index bfc4cc8be..5e4be37d2 100644
--- a/spec/classes/neutron_agents_lbaas_spec.rb
+++ b/spec/classes/neutron_agents_lbaas_spec.rb
@@ -16,7 +16,8 @@ describe 'neutron::agents::lbaas' do
       :interface_driver => 'neutron.agent.linux.interface.OVSInterfaceDriver',
       :device_driver    => 'neutron_lbaas.services.loadbalancer.drivers.haproxy.namespace_driver.HaproxyNSDriver',
       :use_namespaces   => nil,
-      :manage_haproxy_package  => true
+      :manage_haproxy_package  => true,
+      :purge_config            => false
     }
   end
 
@@ -37,6 +38,12 @@ describe 'neutron::agents::lbaas' do
     it_configures 'haproxy lbaas_driver'
     it_configures 'haproxy lbaas_driver without package'
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_lbaas_agent_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures lbaas_agent.ini' do
       is_expected.to contain_neutron_lbaas_agent_config('DEFAULT/debug').with_value('<SERVICE DEFAULT>');
       is_expected.to contain_neutron_lbaas_agent_config('DEFAULT/interface_driver').with_value(p[:interface_driver]);
diff --git a/spec/classes/neutron_agents_metadata_spec.rb b/spec/classes/neutron_agents_metadata_spec.rb
index 40d4fa6d0..90c6a3a62 100644
--- a/spec/classes/neutron_agents_metadata_spec.rb
+++ b/spec/classes/neutron_agents_metadata_spec.rb
@@ -11,6 +11,7 @@ describe 'neutron::agents::metadata' do
       :debug             => false,
       :enabled           => true,
       :shared_secret     => 'metadata-secret',
+      :purge_config      => false,
     }
   end
 
@@ -45,6 +46,12 @@ describe 'neutron::agents::metadata' do
       end
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_metadata_agent_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures metadata_agent.ini' do
       is_expected.to contain_neutron_metadata_agent_config('DEFAULT/debug').with(:value => params[:debug])
       is_expected.to contain_neutron_metadata_agent_config('DEFAULT/auth_ca_cert').with(:value => '<SERVICE DEFAULT>')
diff --git a/spec/classes/neutron_agents_metering_spec.rb b/spec/classes/neutron_agents_metering_spec.rb
index 0bd0a8fa9..2605a9588 100644
--- a/spec/classes/neutron_agents_metering_spec.rb
+++ b/spec/classes/neutron_agents_metering_spec.rb
@@ -39,6 +39,7 @@ describe 'neutron::agents::metering' do
       :interface_driver => 'neutron.agent.linux.interface.OVSInterfaceDriver',
       :driver           => 'neutron.services.metering.drivers.noop.noop_driver.NoopMeteringDriver',
       :use_namespaces   => nil,
+      :purge_config     => false,
     }
   end
 
@@ -55,6 +56,12 @@ describe 'neutron::agents::metering' do
 
     it { is_expected.to contain_class('neutron::params') }
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_metering_agent_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures metering_agent.ini' do
       is_expected.to contain_neutron_metering_agent_config('DEFAULT/debug').with_value(p[:debug]);
       is_expected.to contain_neutron_metering_agent_config('DEFAULT/interface_driver').with_value(p[:interface_driver]);
diff --git a/spec/classes/neutron_agents_ml2_linuxbridge_spec.rb b/spec/classes/neutron_agents_ml2_linuxbridge_spec.rb
index e05d7fefa..3c72a0f77 100644
--- a/spec/classes/neutron_agents_ml2_linuxbridge_spec.rb
+++ b/spec/classes/neutron_agents_ml2_linuxbridge_spec.rb
@@ -13,7 +13,8 @@ describe 'neutron::agents::ml2::linuxbridge' do
       :tunnel_types                => [],
       :local_ip                    => false,
       :physical_interface_mappings => [],
-      :firewall_driver             => 'neutron.agent.linux.iptables_firewall.IptablesFirewallDriver' }
+      :firewall_driver             => 'neutron.agent.linux.iptables_firewall.IptablesFirewallDriver',
+      :purge_config                => false,}
   end
 
   let :test_facts do
@@ -31,6 +32,12 @@ describe 'neutron::agents::ml2::linuxbridge' do
     context 'with default parameters' do
       it { is_expected.to contain_class('neutron::params') }
 
+      it 'passes purge to resource' do
+        is_expected.to contain_resources('neutron_agent_linuxbridge').with({
+          :purge => false
+        })
+      end
+
       it 'configures ml2_conf.ini' do
         is_expected.to contain_neutron_agent_linuxbridge('agent/polling_interval').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_neutron_agent_linuxbridge('linux_bridge/physical_interface_mappings').with_value(default_params[:physical_interface_mappings].join(','))
diff --git a/spec/classes/neutron_agents_ml2_ovs_spec.rb b/spec/classes/neutron_agents_ml2_ovs_spec.rb
index 64736e97c..ba441b792 100644
--- a/spec/classes/neutron_agents_ml2_ovs_spec.rb
+++ b/spec/classes/neutron_agents_ml2_ovs_spec.rb
@@ -18,6 +18,7 @@ describe 'neutron::agents::ml2::ovs' do
       :drop_flows_on_start        => false,
       :firewall_driver            => 'neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver',
       :manage_vswitch             => true,
+      :purge_config               => false,
       }
   end
 
@@ -38,6 +39,12 @@ describe 'neutron::agents::ml2::ovs' do
 
     it { is_expected.to contain_class('neutron::params') }
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_agent_ovs').with({
+        :purge => false
+      })
+    end
+
     it 'configures plugins/ml2/openvswitch_agent.ini' do
       is_expected.to contain_neutron_agent_ovs('agent/polling_interval').with_value('<SERVICE DEFAULT>')
       is_expected.to contain_neutron_agent_ovs('agent/l2_population').with_value('<SERVICE DEFAULT>')
diff --git a/spec/classes/neutron_agents_ml2_sriov_spec.rb b/spec/classes/neutron_agents_ml2_sriov_spec.rb
index d5e80be69..a2710155d 100644
--- a/spec/classes/neutron_agents_ml2_sriov_spec.rb
+++ b/spec/classes/neutron_agents_ml2_sriov_spec.rb
@@ -14,6 +14,7 @@ describe 'neutron::agents::ml2::sriov' do
       :exclude_devices            => [],
       :polling_interval           => 2,
       :supported_pci_vendor_devs  => [],
+      :purge_config               => false,
     }
   end
 
@@ -34,6 +35,12 @@ describe 'neutron::agents::ml2::sriov' do
 
     it { is_expected.to contain_class('neutron::params') }
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_sriov_agent_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures /etc/neutron/plugins/ml2/sriov_agent.ini' do
       is_expected.to contain_neutron_sriov_agent_config('sriov_nic/polling_interval').with_value(p[:polling_interval])
       is_expected.to contain_neutron_sriov_agent_config('sriov_nic/exclude_devices').with_value(p[:exclude_devices].join(','))
diff --git a/spec/classes/neutron_agents_vpnaas_spec.rb b/spec/classes/neutron_agents_vpnaas_spec.rb
index bf99c0e92..5a2970a8e 100644
--- a/spec/classes/neutron_agents_vpnaas_spec.rb
+++ b/spec/classes/neutron_agents_vpnaas_spec.rb
@@ -35,6 +35,7 @@ describe 'neutron::agents::vpnaas' do
       :enabled                     => true,
       :vpn_device_driver           => 'neutron.services.vpn.device_drivers.ipsec.OpenSwanDriver',
       :interface_driver            => 'neutron.agent.linux.interface.OVSInterfaceDriver',
+      :purge_config                => false,
     }
   end
 
@@ -53,6 +54,12 @@ describe 'neutron::agents::vpnaas' do
 
     it_configures 'openswan vpnaas_driver'
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_vpnaas_agent_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures vpnaas_agent.ini' do
       is_expected.to contain_neutron_vpnaas_agent_config('vpnagent/vpn_device_driver').with_value(p[:vpn_device_driver]);
       is_expected.to contain_neutron_vpnaas_agent_config('ipsec/ipsec_status_check_interval').with_value('<SERVICE DEFAULT>');
diff --git a/spec/classes/neutron_init_spec.rb b/spec/classes/neutron_init_spec.rb
index c57f4e8d7..5752bdd81 100644
--- a/spec/classes/neutron_init_spec.rb
+++ b/spec/classes/neutron_init_spec.rb
@@ -12,6 +12,7 @@ describe 'neutron' do
       :rabbit_user           => 'guest',
       :rabbit_password       => 'guest',
       :log_dir               => '/var/log/neutron',
+      :purge_config          => false,
     }
   end
 
@@ -101,6 +102,12 @@ describe 'neutron' do
       )
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures credentials for rabbit' do
       is_expected.to contain_neutron_config('oslo_messaging_rabbit/rabbit_userid').with_value( params[:rabbit_user] )
       is_expected.to contain_neutron_config('oslo_messaging_rabbit/rabbit_password').with_value( params[:rabbit_password] )
diff --git a/spec/classes/neutron_plugins_cisco_spec.rb b/spec/classes/neutron_plugins_cisco_spec.rb
index ed31f8b8c..f2087e42a 100644
--- a/spec/classes/neutron_plugins_cisco_spec.rb
+++ b/spec/classes/neutron_plugins_cisco_spec.rb
@@ -29,7 +29,8 @@ describe 'neutron::plugins::cisco' do
       :max_ports         => '100',
       :max_port_profiles => '65568',
       :max_networks      => '65568',
-      :manager_class     => 'neutron.plugins.cisco.segmentation.l2network_vlan_mgr_v2.L2NetworkVLANMgr'
+      :manager_class     => 'neutron.plugins.cisco.segmentation.l2network_vlan_mgr_v2.L2NetworkVLANMgr',
+      :purge_config      => false,
     }
   end
 
@@ -71,6 +72,30 @@ describe 'neutron::plugins::cisco' do
       )
     end
 
+    it 'passes purge to resource plugin_cisco' do
+      is_expected.to contain_resources('neutron_plugin_cisco').with({
+        :purge => false
+      })
+    end
+
+    it 'passes purge to resource cisco_db_conn' do
+      is_expected.to contain_resources('neutron_plugin_cisco_db_conn').with({
+        :purge => false
+      })
+    end
+
+    it 'passes purge to resource cisco_l2network' do
+      is_expected.to contain_resources('neutron_plugin_cisco_l2network').with({
+        :purge => false
+      })
+    end
+
+    it 'passes purge to resource cisco_credentials' do
+      is_expected.to contain_resources('neutron_plugin_cisco_credentials').with({
+        :purge => false
+      })
+    end
+
     it 'should perform default l2 configuration' do
       is_expected.to contain_neutron_plugin_cisco_l2network('VLANS/vlan_start').\
         with_value(params[:vlan_start])
diff --git a/spec/classes/neutron_plugins_midonet_spec.rb b/spec/classes/neutron_plugins_midonet_spec.rb
index 347c51deb..fe2fdbe8a 100644
--- a/spec/classes/neutron_plugins_midonet_spec.rb
+++ b/spec/classes/neutron_plugins_midonet_spec.rb
@@ -14,7 +14,8 @@ describe 'neutron::plugins::midonet' do
     :midonet_api_port  => '8080',
     :keystone_username => 'neutron',
     :keystone_password => 'test_midonet',
-    :keystone_tenant   => 'services'
+    :keystone_tenant   => 'services',
+    :purge_config      => false, 
   }
   end
 
@@ -41,6 +42,12 @@ describe 'neutron::plugins::midonet' do
         :require => 'Package[python-neutron-plugin-midonet]')
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_plugin_midonet').with({
+        :purge => false
+      })
+    end
+
     it 'should perform default configuration of' do
       midonet_uri = "http://" + params[:midonet_api_ip] + ":" + params[:midonet_api_port] + "/midonet-api";
       is_expected.to contain_neutron_plugin_midonet('MIDONET/midonet_uri').with_value(midonet_uri)
diff --git a/spec/classes/neutron_plugins_ml2_spec.rb b/spec/classes/neutron_plugins_ml2_spec.rb
index 03f05acdd..cf190577c 100644
--- a/spec/classes/neutron_plugins_ml2_spec.rb
+++ b/spec/classes/neutron_plugins_ml2_spec.rb
@@ -39,7 +39,8 @@ describe 'neutron::plugins::ml2' do
       :vni_ranges            => '10:100',
       :path_mtu              => '0',
       :physical_network_mtus => '',
-      :package_ensure        => 'present' }
+      :package_ensure        => 'present',
+      :purge_config          => false, }
   end
 
   let :test_facts do
@@ -63,6 +64,12 @@ describe 'neutron::plugins::ml2' do
         is_expected.to contain_neutron_config('DEFAULT/core_plugin').with_value('neutron.plugins.ml2.plugin.Ml2Plugin')
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_plugin_ml2').with({
+        :purge => false
+      })
+    end
+
     it 'configures ml2_conf.ini' do
       is_expected.to contain_neutron_plugin_ml2('ml2/type_drivers').with_value(p[:type_drivers].join(','))
       is_expected.to contain_neutron_plugin_ml2('ml2/tenant_network_types').with_value(p[:tenant_network_types].join(','))
diff --git a/spec/classes/neutron_plugins_nuage_spec.rb b/spec/classes/neutron_plugins_nuage_spec.rb
index 8d38c3fbe..2df00f536 100644
--- a/spec/classes/neutron_plugins_nuage_spec.rb
+++ b/spec/classes/neutron_plugins_nuage_spec.rb
@@ -23,7 +23,8 @@ describe 'neutron::plugins::nuage' do
         :nuage_vsd_organization => 'vsd',
         :nuage_net_partition_name => 'test',
         :nuage_base_uri_version => 'v3.0',
-        :nuage_cms_id => '7488fae2-7e51-11e5-8bcf-feff819cdc9f'}
+        :nuage_cms_id => '7488fae2-7e51-11e5-8bcf-feff819cdc9f',
+        :purge_config => false,}
   end
 
   shared_examples_for 'neutron plugin nuage' do
@@ -43,6 +44,12 @@ describe 'neutron::plugins::nuage' do
       is_expected.to contain_neutron_config('DEFAULT/core_plugin').with_value('neutron.plugins.nuage.plugin.NuagePlugin')
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_plugin_nuage').with({
+        :purge => false
+      })
+    end
+
     it 'should configure plugin.ini' do
       is_expected.to contain_neutron_plugin_nuage('RESTPROXY/default_net_partition_name').with_value(params[:nuage_net_partition_name])
       is_expected.to contain_neutron_plugin_nuage('RESTPROXY/server').with_value(params[:nuage_vsd_ip])
diff --git a/spec/classes/neutron_plugins_nvp_spec.rb b/spec/classes/neutron_plugins_nvp_spec.rb
index af46dee76..fe9759f16 100644
--- a/spec/classes/neutron_plugins_nvp_spec.rb
+++ b/spec/classes/neutron_plugins_nvp_spec.rb
@@ -11,7 +11,8 @@ describe 'neutron::plugins::nvp' do
   let :default_params do
     {
         :metadata_mode  => 'access_network',
-        :package_ensure => 'present'}
+        :package_ensure => 'present',
+        :purge_config   => false,}
   end
 
   let :test_facts do
@@ -59,6 +60,12 @@ describe 'neutron::plugins::nvp' do
       )
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_plugin_nvp').with({
+        :purge => false
+      })
+    end
+
     it 'should configure nvp.ini' do
       is_expected.to contain_neutron_plugin_nvp('DEFAULT/default_tz_uuid').with_value(p[:default_tz_uuid])
       is_expected.to contain_neutron_plugin_nvp('nvp/metadata_mode').with_value(p[:metadata_mode])
diff --git a/spec/classes/neutron_plugins_opencontrail_spec.rb b/spec/classes/neutron_plugins_opencontrail_spec.rb
index e453b32ba..7ed5ef256 100644
--- a/spec/classes/neutron_plugins_opencontrail_spec.rb
+++ b/spec/classes/neutron_plugins_opencontrail_spec.rb
@@ -16,7 +16,8 @@ describe 'neutron::plugins::opencontrail' do
       :keystone_admin_user        => 'admin',
       :keystone_admin_tenant_name => 'admin',
       :keystone_admin_password    => 'admin',
-      :keystone_admin_token       => 'token1'
+      :keystone_admin_token       => 'token1',
+      :purge_config               => false,
     }
   end
 
@@ -36,6 +37,12 @@ describe 'neutron::plugins::opencontrail' do
       params.merge!(default_params)
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_plugin_opencontrail').with({
+        :purge => false
+      })
+    end
+
     it 'should perform default configuration of' do
       is_expected.to contain_neutron_plugin_opencontrail('APISERVER/api_server_ip').with_value(params[:api_server_ip])
       is_expected.to contain_neutron_plugin_opencontrail('APISERVER/api_server_port').with_value(params[:api_server_port])
diff --git a/spec/classes/neutron_plugins_plumgrid_spec.rb b/spec/classes/neutron_plugins_plumgrid_spec.rb
index 63976f44e..92e27c013 100644
--- a/spec/classes/neutron_plugins_plumgrid_spec.rb
+++ b/spec/classes/neutron_plugins_plumgrid_spec.rb
@@ -19,6 +19,7 @@ describe 'neutron::plugins::plumgrid' do
     :nova_metadata_ip     => '127.0.0.1',
     :nova_metadata_port   => '8775',
     :connector_type       => 'distributed',
+    :purge_config         => false,
   }
   end
 
@@ -50,6 +51,18 @@ describe 'neutron::plugins::plumgrid' do
       )
     end
 
+    it 'passes purge to resource plugin_plumgrid' do
+      is_expected.to contain_resources('neutron_plugin_plumgrid').with({
+        :purge => false
+      })
+    end
+
+    it 'passes purge to resource plumlib_plumgrid' do
+      is_expected.to contain_resources('neutron_plumlib_plumgrid').with({
+        :purge => false
+      })
+    end
+
     it 'should perform default configuration of plumgrid plugin' do
       is_expected.to contain_neutron_plugin_plumgrid('PLUMgridDirector/director_server').with_value(params[:director_server])
       is_expected.to contain_neutron_plugin_plumgrid('PLUMgridDirector/director_server_port').with_value(params[:director_server_port])
diff --git a/spec/classes/neutron_services_fwaas_spec.rb b/spec/classes/neutron_services_fwaas_spec.rb
index c876729f2..654ee67e3 100644
--- a/spec/classes/neutron_services_fwaas_spec.rb
+++ b/spec/classes/neutron_services_fwaas_spec.rb
@@ -37,7 +37,8 @@ describe 'neutron::services::fwaas' do
   end
 
   let :default_params do
-    { :vpnaas_agent_package => false }
+    { :vpnaas_agent_package => false,
+      :purge_config         => false, }
   end
 
   shared_examples_for 'neutron fwaas service plugin' do
@@ -45,6 +46,12 @@ describe 'neutron::services::fwaas' do
       default_params.merge(params)
     end
 
+    it 'passes purge to resource' do
+      is_expected.to contain_resources('neutron_fwaas_service_config').with({
+        :purge => false
+      })
+    end
+
     it 'configures driver in fwaas_driver.ini' do
       is_expected.to contain_neutron_fwaas_service_config('fwaas/driver').with_value('<SERVICE DEFAULT>')
       is_expected.to contain_neutron_fwaas_service_config('fwaas/enabled').with_value('<SERVICE DEFAULT>')