Use Galera for storing Grafana items

Change-Id: I37a05d86395f8c825c617fff7474cedc60ce6768
diff --git a/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml b/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
index d49442a..fe157f8 100644
--- a/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
@@ -42,6 +42,9 @@
     cluster_node03_hostname: mon03
     cluster_node03_address: ${_param:stacklight_monitor_node03_address}
     grafana_admin_password: admin
+    grafana_database_type: mysql
+    grafana_database_host: ${_param:openstack_database_address}
+    grafana_database_password: ${_param:mysql_grafana_password}
     docker_image_alertmanager: mirantis/alertmanager:latest
     docker_image_pushgateway: mirantis/pushgateway:latest
     docker_image_prometheus: mirantis/prometheus:latest