Deploy Galera on monitoring nodes

Grafana requires a MySQL database to store users, groups and dashboards.

Change-Id: Id77f69def97537b9ca0128ee2c2a8ea64241daef
Depends-On: I0932d9a7520d998fd259821f5b5e7113cb3a9ced
diff --git a/classes/cluster/virtual-mcp11-k8s-calico/monitoring/init.yml b/classes/cluster/virtual-mcp11-k8s-calico/monitoring/init.yml
index 96c462b..4f8fc0a 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico/monitoring/init.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico/monitoring/init.yml
@@ -5,3 +5,12 @@
 
     # prometheus
     prometheus_control_address: ${_param:docker_swarm_address}
+
+    mysql_admin_user: root
+    mysql_admin_password: workshop
+
+    mysql_grafana_password: password
+    cluster_local_address: ${_param:single_address}
+    galera_server_cluster_name: monitoring_cluster
+    galera_server_maintenance_password: workshop
+    galera_server_admin_password: workshop