add Keystone region configuration

Change-Id: If672a613f0b6d4ef2bbbf123b2fe716d95c86e2b
diff --git a/metadata/service/control/cluster.yml b/metadata/service/control/cluster.yml
index ee83890..93ebddc 100644
--- a/metadata/service/control/cluster.yml
+++ b/metadata/service/control/cluster.yml
@@ -22,6 +22,7 @@
         password: ${_param:mysql_neutron_password}
       identity:
         engine: keystone
+        region: RegionOne
         host: ${_param:cluster_vip_address}
         port: 35357
         user: neutron
@@ -37,6 +38,7 @@
         ha_queues: true
       compute:
         host: ${_param:cluster_vip_address}
+        region: RegionOne
         user: nova
         password: ${_param:keystone_nova_password}
         tenant: service