Update Config Reference for Ceilometer

* Enhancing Retry logic to Coordination when joining partitioning grp https://review.openstack.org/#/c/294244/
* drop magnetodb support: https://review.openstack.org/301245
* Remove the deprecated DB2 driver: https://review.openstack.org/302265

Change-Id: I786366131d7700c670bcc63cba0b06a0f39e2dbf
Closes-Bug: #1567146

doc/config-reference/source/tables/ceilometer-common.rst

@@ -52,6 +52,10 @@
      - (Floating point) Number of seconds between checks to see if group membership has changed
    * - ``heartbeat`` = ``1.0``
      - (Floating point) Number of seconds between heartbeats for distributed coordination.
+   * - ``max_retry_interval`` = ``30``
+     - (Integer) Maximum number of seconds between retry to join partitioning group
+   * - ``retry_backoff`` = ``1``
+     - (Integer) Retry backoff factor when retrying to connect withcoordination backend
    * - **[keystone_authtoken]**
      -
    * - ``memcached_servers`` = ``None``

doc/config-reference/source/tables/ceilometer-database.rst

@@ -30,8 +30,6 @@
      - (Integer) Verbosity of SQL debugging information: 0=None, 100=Everything.
    * - ``connection_trace`` = ``False``
      - (Boolean) Add Python stack traces to SQL as comment strings.
-   * - ``db2nosql_resource_id_maxlen`` = ``512``
-     - (Integer) The max length of resources id in DB2 nosql, the value should be larger than len(hostname) * 2 as compute node's resource id is <hostname>_<nodename>.
    * - ``db_inc_retry_interval`` = ``True``
      - (Boolean) If True, increases the interval between retries of a database operation up to db_max_retry_interval.
    * - ``db_max_retries`` = ``20``

doc/config-reference/source/tables/ceilometer-dispatchers.rst

@@ -10,7 +10,7 @@
 
 .. _ceilometer-dispatchers:
 
-.. list-table:: Description of dispatchers configuration options
+.. list-table:: Description of Dispatchers configuration options
    :header-rows: 1
    :class: config-ref-table
 

tools/autogenerate-config-flagmappings/ceilometer.flagmappings

@@ -33,7 +33,6 @@ logging_debug_format_suffix logging
 logging_default_format_string logging
 logging_exception_prefix logging
 logging_user_identity_format logging
-magnetodb_control_exchange magnetodb
 magnum_control_exchange exchange
 memcached_servers common
 meter_dispatchers dispatchers
@@ -100,6 +99,8 @@ compute/workload_partitioning common
 coordination/backend_url common
 coordination/check_watchers common
 coordination/heartbeat common
+coordination/max_retry_interval common
+coordination/retry_backoff common
 cors/allow_credentials cors
 cors/allow_headers cors
 cors/allow_methods cors
@@ -116,7 +117,6 @@ database/backend database
 database/connection database
 database/connection_debug database
 database/connection_trace database
-database/db2nosql_resource_id_maxlen database
 database/db_inc_retry_interval database
 database/db_max_retries database
 database/db_max_retry_interval database

tools/autogenerate-config-flagmappings/ceilometer.headers

@@ -1,6 +1,7 @@
 collector collector
 dispatcher_http HTTP dispatcher
 dispatcher_gnocchi Gnocchi dispatcher
+dispatchers Dispatchers
 events events
 exchange exchange
 hyperv HyperV