Closes-Bug: #1629111 - Cassandra service doesn't start automatically …

…on config nodes

The contrail-database service needs to be explicitly started.
supervisor-database service is there only on DB-role nodes.

Change-Id: I60862381df29e5804a5fd260e9dfea2247b98485

contrail/environment/modules/contrail/manifests/config/database_service.pp

@@ -4,4 +4,9 @@
         enable => true,
         subscribe => File['/etc/zookeeper/conf/zoo.cfg'],
     }
+    ->
+    service { 'contrail-database' :
+        ensure    => running,
+        enable    => true
+    }
 }