Enable configuring public params for Keystone and Gnocchi

Change-Id: I3b4062dd3e754ae877f80c23b90b2545bce24299
Closes-bug: PROD-21727
diff --git a/keystone/client/service/keystone.yml b/keystone/client/service/keystone.yml
index 0cfa963..53e7cd1 100644
--- a/keystone/client/service/keystone.yml
+++ b/keystone/client/service/keystone.yml
@@ -7,6 +7,8 @@
     keystone_public_path: "/v2.0"
     keystone_internal_path: "/v2.0"
     keystone_admin_path: "/v2.0"
+    keystone_public_address: ${_param:cluster_public_host}
+    keystone_public_port: 5000
   keystone:
     client:
       server:
@@ -17,9 +19,9 @@
               description: OpenStack Identity Service
               endpoints:
               - region: ${_param:openstack_region}
-                public_address: ${_param:cluster_public_host}
+                public_address: ${_param:keystone_public_address}
                 public_protocol: ${_param:cluster_public_protocol}
-                public_port: 5000
+                public_port: ${_param:keystone_public_port}
                 public_path: ${_param:keystone_public_path}
                 internal_address: ${_param:keystone_service_host}
                 internal_port: 5000