add region to metadata

Change-Id: I45f80601750f4df41c15ca52ea67174a29815b98
diff --git a/tests/pillar/single_ceph.sls b/tests/pillar/single_ceph.sls
index e4e9791..5e28763 100644
--- a/tests/pillar/single_ceph.sls
+++ b/tests/pillar/single_ceph.sls
@@ -21,6 +21,7 @@
       port: 35357
       user: glance
       password: password
+      region: RegionOne
       tenant: service
     message_queue:
       engine: rabbitmq