opencontrail sphinx doc
diff --git a/metadata/service/control/cluster.yml b/metadata/service/control/cluster.yml
index 5f28ecb..946a264 100644
--- a/metadata/service/control/cluster.yml
+++ b/metadata/service/control/cluster.yml
@@ -1,5 +1,7 @@
 applications:
 - opencontrail
+classes:
+- service.opencontrail.support
 parameters:
   _param:
     opencontrail_version: 2.2