add region to metadata

Change-Id: I45f80601750f4df41c15ca52ea67174a29815b98
diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index af1dc11..2f23a6b 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -27,6 +27,7 @@
         port: 35357
         user: glance
         password: ${_param:keystone_glance_password}
+        region: RegionOne
         tenant: service
       message_queue:
         engine: rabbitmq