Mitaka release configuration files support

Change-Id: I4ff39fe5903b544696917cfdd38584a2dba86877
diff --git a/metadata/service/control/cluster.yml b/metadata/service/control/cluster.yml
index 2e2837c..0bc715e 100644
--- a/metadata/service/control/cluster.yml
+++ b/metadata/service/control/cluster.yml
@@ -63,3 +63,12 @@
         mtu: 1500
       metadata:
         password: metadataPass
+      cache:
+        engine: memcached
+        members:
+        - host: ${_param:cluster_node01_address}
+          port: 11211
+        - host: ${_param:cluster_node02_address}
+          port: 11211
+        - host: ${_param:cluster_node03_address}
+          port: 11211