Disable SSL encryption for horizon identity.

Change-Id: Ie8b4e1a19c6afaa218766969c90aee67fee67962
Related-PROD: PROD-18576
diff --git a/classes/cluster/virtual-mcp11-aio/openstack/init.yml b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
index f5a3085..0fd06b2 100755
--- a/classes/cluster/virtual-mcp11-aio/openstack/init.yml
+++ b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
@@ -245,7 +245,7 @@
     server:
       secure: False
       identity:
-        encryption: ssl
+        encryption: ${_param:horizon_identity_encryption}
       api_versions:
         identity: 3
   designate: