changed glusterfs volumes to use glusterfs service host

Change-Id: I18b5979d8d3d968ded94ace90e1d5513b7c49944
diff --git a/glusterfs/client/volume/postgresql.yml b/glusterfs/client/volume/postgresql.yml
index 1867d82..d2337e7 100644
--- a/glusterfs/client/volume/postgresql.yml
+++ b/glusterfs/client/volume/postgresql.yml
@@ -1,8 +1,10 @@
 parameters:
+  _param:
+    postgresql_glusterfs_service_host: ${_param:glusterfs_service_host}
   glusterfs:
     client:
       volumes:
         postgresql:
           path: /srv/volumes/postgresql
-          server: ${_param:cluster_node01_address}
+          server: ${_param:postgresql_glusterfs_service_host}
           opts: 'defaults'