Add possibility to manage file permissions of config files.

Fixes-bug: PROD-36551
Change-Id: I96049fe250307ffc8d1e194b4b24374c0a4c5c26
diff --git a/metadata/service/server/cluster.yml b/metadata/service/server/cluster.yml
index 7ebc388..8221271 100644
--- a/metadata/service/server/cluster.yml
+++ b/metadata/service/server/cluster.yml
@@ -2,6 +2,7 @@
 - heat
 classes:
 - service.heat.support
+- service.heat.file_permissions
 parameters:
   _param:
     heat_client_default_endpoint_type: internalURL