Add support for Octavia service-to-service credentials

This patch adds hiera for configuring octavia's service-to-service
communication.

Change-Id: Iaa48ed3de8de79134898267c6241546b6c1cd7ec
Depends-On: I67ab537d1b2a82f17657ed90f794f0fa13c5207f

puppet/services/octavia-base.yaml

@@ -70,6 +70,10 @@ parameters:
     description: Driver or drivers to handle sending notifications.
     constraints:
       - allowed_values: [ 'messagingv2', 'noop' ]
+  OctaviaPassword:
+    description: The password for the Octavia's database account.
+    type: string
+    hidden: true
 
 conditions:
   service_debug_unset: {equals : [{get_param: OctaviaDebug}, '']}
@@ -91,4 +95,10 @@ outputs:
          octavia::rabbit_userid: {get_param: RabbitUserName}
          octavia::rabbit_password: {get_param: RabbitPassword}
          octavia::rabbit_port: {get_param: RabbitClientPort}
-
+         octavia::service_auth::auth_url: {get_param: [EndpointMap, KeystonePublic, uri_no_suffix]}
+         octavia::service_auth::auth_type: 'password'
+         octavia::service_auth::username: 'octavia'
+         octavia::service_auth::password: {get_param: OctaviaPassword}
+         octavia::service_auth::project_name: 'service'
+         octavia::service_auth::project_domain_name: 'Default'
+         octavia::service_auth::user_domain_name: 'Default'

releasenotes/notes/add-service-auth-configuration-cb6537998a37f785.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Add configuration of octavia's 'service_auth' parameters.