Fix Grafana GlusterFS volume

Change-Id: I648d144dd81fa334f33363b8c5d1acb4544f020b
diff --git a/docker/swarm/stack/dashboard.yml b/docker/swarm/stack/dashboard.yml
index 65814b9..934920f 100644
--- a/docker/swarm/stack/dashboard.yml
+++ b/docker/swarm/stack/dashboard.yml
@@ -21,7 +21,7 @@
               ports:
                 - 15013:3000
               volumes:
-                /srv/glusterfs/grafana:${_param:grafana_session_directory}
+                - /srv/glusterfs/grafana:${_param:grafana_session_directory}
               environment:
                 GF_DATABASE_TYPE: ${_param:grafana_database_type}
                 GF_DATABASE_NAME: grafana
diff --git a/glusterfs/client/volume/grafana.yaml b/glusterfs/client/volume/grafana.yml
similarity index 100%
rename from glusterfs/client/volume/grafana.yaml
rename to glusterfs/client/volume/grafana.yml
diff --git a/glusterfs/server/volume/grafana.yaml b/glusterfs/server/volume/grafana.yml
similarity index 100%
rename from glusterfs/server/volume/grafana.yaml
rename to glusterfs/server/volume/grafana.yml