parametrize endpoints

Change-Id: I38469f497ed5ff7552a6f38d1ebefb56c1bbc9fc
diff --git a/tests/pillar/server_cluster.sls b/tests/pillar/server_cluster.sls
index 6bbe96f..2cd6eb4 100644
--- a/tests/pillar/server_cluster.sls
+++ b/tests/pillar/server_cluster.sls
@@ -18,6 +18,7 @@
       tenant: service
       user: ceilometer
       password: password
+      endpoint_type: internalURL
     message_queue:
       engine: rabbitmq
       members: