RabbitMQ TLS support

Add ability to use tls for messaging.

PROD-15653

Change-Id: I90146579e9f509c9b3f4ee3585b5a923240804b7
diff --git a/README.rst b/README.rst
index 2255dca..cd6b88a 100644
--- a/README.rst
+++ b/README.rst
@@ -156,6 +156,24 @@
           sql_idle_timeout: 180
 
 
+Configuring TLS communications
+------------------------------
+
+**RabbitMQ**
+
+.. code-block:: yaml
+
+ barbican:
+   server:
+      message_queue:
+        port: 5671
+        ssl:
+          enabled: True
+          cacert: cert body if the cacert_file does not exists
+          cacert_file: /etc/openstack/rabbitmq-ca.pem
+
+
+
 Configuring plugins
 -------------------