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

Change-Id: I1eae4e7d839ca9a82804456e5d354ab9482d335b
diff --git a/README.rst b/README.rst
index 4a9bcbd..0ad803b 100644
--- a/README.rst
+++ b/README.rst
@@ -162,6 +162,27 @@
           region: RegionTwo
         ...
 
+
+Client-side RabbitMQ HA setup
+
+.. code-block:: yaml
+
+    neutron:
+      server:
+        ....
+        message_queue:
+          engine: rabbitmq
+          members:
+            - host: 10.0.16.1
+            - host: 10.0.16.2
+            - host: 10.0.16.3
+          user: openstack
+          password: pwd
+          virtual_host: '/openstack'
+        ....
+
+
+
 Usage
 =====