run ceph on ceph:common only if ceph:cluster is present / ceph cluster grains checks for common

PROD-16212

Change-Id: Id7b33e8538f3034a8c9c11d3aaffd85d764722af
diff --git a/metadata/service/common/single.yml b/metadata/service/common/single.yml
index 91a783b..7aec939 100644
--- a/metadata/service/common/single.yml
+++ b/metadata/service/common/single.yml
@@ -1,3 +1,5 @@
+applications:
+- ceph
 parameters:
   _param:
     ceph_mon_node01_hostname: cmn01