Use Grafana stack instead of Docker service

Change-Id: Ib7df6e0d6eb59b0ad059bf648b4714619df22252
diff --git a/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml b/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml
index dfd50bb..44db9f2 100755
--- a/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-contrail/stacklight/server.yml
@@ -18,7 +18,7 @@
 - system.prometheus.server.alertmanager.dns
 - system.prometheus.server.target.dns
 - system.docker.swarm.stack.monitoring
-- system.docker.swarm.service.dashboard.grafana_server
+- system.docker.swarm.stack.dashboard
 - cluster.virtual-mcp11-contrail
 parameters:
   _param: