change rgw endpoint for vip fqdn

Change-Id: I26da73b12402e90193c26d5d596ac68cf524a660
Related-Prod: PROD-35101
diff --git a/metadata/service/radosgw/cluster.yml b/metadata/service/radosgw/cluster.yml
index fdc44c5..7c96f51 100644
--- a/metadata/service/radosgw/cluster.yml
+++ b/metadata/service/radosgw/cluster.yml
@@ -5,7 +5,7 @@
 - service.ceph.support
 parameters:
   _param:
-    ceph_radosgw_hostname: ${linux:system:name}
+    ceph_radosgw_hostname: ${_param:ceph_rgw_hostname}.${_param:cluster_domain}
     ceph_radosgw_bind_port: 8080
   ceph:
     radosgw:
@@ -15,4 +15,4 @@
         address: ${_param:single_address}
         port: ${_param:ceph_radosgw_bind_port}
       swift:
-        enforce_content_length: true
\ No newline at end of file
+        enforce_content_length: true