Refactor resource dependencies

This refactors resource dependencies to avoid unnecessary dependencies
across services. For example zaqar service does not require cinder db.

Change-Id: I8b2c64ab4896c6fbb407eaa58e99056da3b5170c

manifests/cache.pp

@@ -261,4 +261,8 @@ class zaqar::cache (
     dead_timeout                         => $dead_timeout,
     manage_backend_package               => $manage_backend_package,
   }
+
+  # all cache settings should be applied and all packages should be installed
+  # before service startup
+  Oslo::Cache['zaqar_config'] -> Anchor['zaqar::service::begin']
 }

manifests/deps.pp

@@ -24,19 +24,6 @@ class zaqar::deps {
   ~> Service<| tag == 'zaqar-service' |>
   ~> anchor { 'zaqar::service::end': }
 
-  # all cache settings should be applied and all packages should be installed
-  # before service startup
-  Oslo::Cache<||> -> Anchor['zaqar::service::begin']
-
-  # all db settings should be applied and all packages should be installed
-  # before dbsync starts
-  Oslo::Db<||> -> Anchor['zaqar::dbsync::begin']
-
-  # policy config should occur in the config block also.
-  Anchor['zaqar::config::begin']
-  -> Openstacklib::Policy<| tag == 'zaqar' |>
-  -> Anchor['zaqar::config::end']
-
   # Installation or config changes will always restart services.
   Anchor['zaqar::install::end'] ~> Anchor['zaqar::service::begin']
   Anchor['zaqar::config::end']  ~> Anchor['zaqar::service::begin']

manifests/keystone/authtoken.pp

@@ -279,4 +279,6 @@ class zaqar::keystone::authtoken(
       service_type                   => $service_type,
       interface                      => $interface;
   }
+
+  Keystone::Resource::Authtoken['zaqar_config'] -> Anchor['zaqar::config::end']
 }

manifests/management/sqlalchemy.pp

@@ -23,4 +23,8 @@ class zaqar::management::sqlalchemy(
     backend_package_ensure => $package_ensure,
     manage_config          => false,
   }
+
+  # all db settings should be applied and all packages should be installed
+  # before dbsync starts
+  Oslo::Db['zaqar_config'] -> Anchor['zaqar::dbsync::begin']
 }

manifests/policy.pp

@@ -70,6 +70,11 @@ class zaqar::policy (
 
   create_resources('openstacklib::policy', { $policy_path => $policy_parameters })
 
+  # policy config should occur in the config block also.
+  Anchor['zaqar::config::begin']
+  -> Openstacklib::Policy[$policy_path]
+  -> Anchor['zaqar::config::end']
+
   oslo::policy { 'zaqar_config':
     enforce_scope        => $enforce_scope,
     enforce_new_defaults => $enforce_new_defaults,