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

Change-Id: I614ab8552fd4596010a3f1a6a4f46e85b8a9de2d
diff --git a/tests/pillar/cluster.sls b/tests/pillar/cluster.sls
index 3e0e665..97a2d61 100644
--- a/tests/pillar/cluster.sls
+++ b/tests/pillar/cluster.sls
@@ -27,11 +27,12 @@
       tenant: service
     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
     storage:
       engine: file