Add Barbican integration to Nova

This patch adds Barbican integration to Nova

Change-Id: I74ba842b34fcfd4627586a3f337ad729c706c5b5
Related-PROD: PROD-15205
diff --git a/README.rst b/README.rst
index 56ecdb1..2a8ace1 100644
--- a/README.rst
+++ b/README.rst
@@ -71,6 +71,8 @@
         audit:
           enabled: false
         osapi_max_limit: 500
+        barbican:
+          enabled: true
 
 
 Nova services from custom package repository
@@ -146,6 +148,16 @@
           # Add key without value to remove line from policy.json
           'compute:create:attach_network':
 
+Enable Barbican integration
+
+.. code-block:: yaml
+
+    nova:
+      controller:
+        ....
+        barbican:
+          enabled: true
+
 
 Client-side RabbitMQ TLS configuration:
 ---------------------------------------
@@ -367,6 +379,17 @@
               - /dev/sdj
               - /dev/sdh
 
+Enable Barbican integration
+
+.. code-block:: yaml
+
+    nova:
+      compute:
+        ....
+        barbican:
+          enabled: true
+
+
 Client role
 -----------