fix OpenContrail 4.0 metadata

Change-Id: I527a5a9cf93af3feec6fdd86a0ef8ba6c296bf9a
diff --git a/opencontrail/compute/cluster4_0.yml b/opencontrail/compute/cluster4_0.yml
index b21eb52..68f8007 100644
--- a/opencontrail/compute/cluster4_0.yml
+++ b/opencontrail/compute/cluster4_0.yml
@@ -34,6 +34,11 @@
         - host: ${_param:opencontrail_analytics_node01_address}
         - host: ${_param:opencontrail_analytics_node02_address}
         - host: ${_param:opencontrail_analytics_node03_address}
+      control:
+        members:
+        - host: ${_param:opencontrail_control_node01_address}
+        - host: ${_param:opencontrail_control_node02_address}
+        - host: ${_param:opencontrail_control_node03_address}
       interface:
         address: ${_param:opencontrail_compute_address}
         dev: ${_param:opencontrail_compute_iface}