Enable Docker Grafana to use MySQL or Postgres

Change-Id: If0ef7af8a432581b20745bf09c7680743b8cafe8
diff --git a/docker/swarm/stack/dashboard.yml b/docker/swarm/stack/dashboard.yml
index 5621d8a..e7667a2 100644
--- a/docker/swarm/stack/dashboard.yml
+++ b/docker/swarm/stack/dashboard.yml
@@ -1,4 +1,9 @@
 parameters:
+  _param:
+    grafana_database_type: sqlite3
+    grafana_database_host: localhost
+    grafana_database_port: 3306
+    grafana_database_password: password
   docker:
     client:
       stack:
@@ -13,4 +18,9 @@
               ports:
                 - 15013:3000
               environment:
+                GF_DATABASE_TYPE: ${_param:grafana_database_type}
+                GF_DATABASE_NAME: grafana
+                GF_DATABASE_USER: grafana
+                GF_DATABASE_PASSWORD: ${_param:grafana_database_password}
+                GF_DATABASE_HOST: "${_param:grafana_database_host}:${_param:grafana_database_port}"
                 GF_SECURITY_ADMIN_PASSWORD: ${_param:grafana_admin_password}