add region configuration from pillar data

Change-Id: I93a56b3ed6243a85962313876ca53ba7c916b093
diff --git a/tests/pillar/server_cluster.sls b/tests/pillar/server_cluster.sls
index 9b3c41c..04aa4bb 100644
--- a/tests/pillar/server_cluster.sls
+++ b/tests/pillar/server_cluster.sls
@@ -1,5 +1,6 @@
 ceilometer:
   server:
+    region: RegionOne
     enabled: true
     version: liberty
     cluster: true