Expose OVS bridge related options into metering agent config file

Agent state options (report_interval), or interface related options
(f.e. ovs_integration_bridge) should be exposed into all configuration
files for all agents that may report a state, or instantiate a bridge
object.

Since some of options that were previously considered 'base' don't apply
to metering agent (specifically, availability_zone), moved them into
separate lists and included them into relevant agents (l3 and dhcp).

The only glitch with the change is that log_agent_heartbeats option is
now exposed into metering agent configuration file, even though the
agent does not honour it. I think it's minor and we can live with it.

Change-Id: Ibceca20cec60e75a8c6ddd35f3f9cb8cca272a9e

etc/oslo-config-generator/dhcp_agent.ini

@@ -2,6 +2,7 @@
 output_file = etc/dhcp_agent.ini.sample
 wrap_width = 79
 
+namespace = neutron.az.agent
 namespace = neutron.base.agent
 namespace = neutron.dhcp.agent
 namespace = oslo.log

etc/oslo-config-generator/l3_agent.ini

@@ -2,6 +2,7 @@
 output_file = etc/l3_agent.ini.sample
 wrap_width = 79
 
+namespace = neutron.az.agent
 namespace = neutron.base.agent
 namespace = neutron.l3.agent
 namespace = oslo.log

etc/oslo-config-generator/metering_agent.ini

@@ -2,5 +2,6 @@
 output_file = etc/metering_agent.ini.sample
 wrap_width = 79
 
+namespace = neutron.base.agent
 namespace = neutron.metering.agent
 namespace = oslo.log

neutron/opts.py

@@ -156,11 +156,13 @@ def list_base_agent_opts():
              neutron.agent.common.config.INTERFACE_DRIVER_OPTS,
              neutron.conf.agent.ovs_conf.OPTS)
          ),
-        ('AGENT',
-         itertools.chain(
-             neutron.agent.common.config.AGENT_STATE_OPTS,
-             neutron.agent.common.config.AVAILABILITY_ZONE_OPTS)
-         )
+        ('AGENT', neutron.agent.common.config.AGENT_STATE_OPTS),
+    ]
+
+
+def list_az_agent_opts():
+    return [
+        ('AGENT', neutron.agent.common.config.AVAILABILITY_ZONE_OPTS),
     ]
 
 
@@ -230,11 +232,7 @@ def list_metadata_agent_opts():
 
 def list_metering_agent_opts():
     return [
-        ('DEFAULT',
-         itertools.chain(
-             neutron.conf.services.metering_agent.metering_agent_opts,
-             neutron.agent.common.config.INTERFACE_DRIVER_OPTS)
-         )
+        ('DEFAULT', neutron.conf.services.metering_agent.metering_agent_opts),
     ]
 
 

setup.cfg

@@ -129,6 +129,7 @@ oslo.messaging.notify.drivers =
 oslo.config.opts =
     neutron = neutron.opts:list_opts
     neutron.agent = neutron.opts:list_agent_opts
+    neutron.az.agent = neutron.opts:list_az_agent_opts
     neutron.base.agent = neutron.opts:list_base_agent_opts
     neutron.db = neutron.opts:list_db_opts
     neutron.dhcp.agent = neutron.opts:list_dhcp_agent_opts