Adding support for Designate notifications.

- This patch is for initial work on integrating Designate to our integrated gates.
 - Adding nova_designate_enabled option.
 - Adding oslo_messaging_notifications stanza.

Change-Id: I55346e338feb9e4acd376988b664d08c286e1605

defaults/main.yml

@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# Enable/Disable designate configurations
+nova_designate_enabled: False
+# Notification topics for designate.
+nova_notifications_designate: notifications_designate
 # Enable/Disable ceilometer configurations
 nova_ceilometer_enabled: False
 

templates/nova.conf.j2

@@ -126,8 +126,17 @@ instance_usage_audit_period = hour
 notify_on_state_change = vm_and_task_state
 {% endif %}
 
-{% if nova_ceilometer_enabled %}
+# Notifications
+{% if nova_ceilometer_enabled or nova_designate_enabled %}
 [oslo_messaging_notifications]
+{% set notification_topics = [] %}
+{% if neutron_ceilometer_enabled %}
+{%   set _ = notification_topics.append('notifications') %}
+{% endif %}
+{% if neutron_designate_enabled %}
+{%   set _ = notification_topics.append(nova_notifications_designate) %}
+{% endif %}
+notification_topics = {{ notification_topics | join(',') }}
 driver = messagingv2
 transport_url = rabbit://{% for host in nova_rabbitmq_telemetry_servers.split(',') %}{{ nova_rabbitmq_telemetry_userid }}:{{ nova_rabbitmq_telemetry_password }}@{{ host }}:{{ nova_rabbitmq_telemetry_port }}{% if not loop.last %},{% else %}/{{ nova_rabbitmq_telemetry_vhost }}{% endif %}{% endfor %}
 {% endif %}