[octavia] Define DB/AMQP service endpoints

Override octavia database/message endpoints defined at service level.

Change-Id: I023be13275789611c9cff4c0dffcf802aedf295f
Closes-Bug: PROD-19376
diff --git a/octavia/api/cluster.yml b/octavia/api/cluster.yml
index 75a4c19..958f3d4 100644
--- a/octavia/api/cluster.yml
+++ b/octavia/api/cluster.yml
@@ -2,8 +2,17 @@
 - service.octavia.api.cluster
 - system.haproxy.proxy.listen.openstack.octavia
 parameters:
+  _param:
+    cluster_internal_protocol: 'http'
   octavia:
     api:
       enabled: true
       bind:
         address: ${_param:cluster_local_address}
+      database:
+        host: ${_param:openstack_database_address}
+      identity:
+        region: ${_param:openstack_region}
+        protocol: ${_param:cluster_internal_protocol}
+      message_queue:
+        host: ${_param:openstack_message_queue_address}
diff --git a/octavia/api/single.yml b/octavia/api/single.yml
index 685c4b4..a9d30a5 100644
--- a/octavia/api/single.yml
+++ b/octavia/api/single.yml
@@ -1,8 +1,17 @@
 classes:
 - service.octavia.api.single
 parameters:
+  _param:
+    internal_protocol: 'http'
   octavia:
     api:
       enabled: true
       bind:
         address: ${_param:single_address}
+      database:
+        host: ${_param:openstack_database_address}
+      identity:
+        region: ${_param:openstack_region}
+        protocol: ${_param:internal_protocol}
+      message_queue:
+        host: ${_param:openstack_message_queue_address}