[RabbitMQ] Parametrized message queue hosts to enable client-side HA.

Change-Id: Iba6bd1e0f24cdbf8fe2888b245f395915bd3eda2
diff --git a/tests/pillar/server_cluster.sls b/tests/pillar/server_cluster.sls
index ef6a978..32c54d7 100644
--- a/tests/pillar/server_cluster.sls
+++ b/tests/pillar/server_cluster.sls
@@ -39,9 +39,10 @@
       password: password
     message_queue:
       engine: rabbitmq
-      host: 127.0.0.1
-      port: 5672
+      members:
+      - host: 127.0.0.1
+      - host: 127.0.1.1
+      - host: 127.0.2.1
       user: openstack
       password: password
       virtual_host: '/openstack'
-      ha_queues: true
\ No newline at end of file