Bump Grafana version to latest 5.1.3

Change-Id: I136c26278f514c43058e688df9774e5d75088cd9
Closes-Bug: PROD-20462
diff --git a/classes/cluster/sl-k8s-calico/stacklight/server.yml b/classes/cluster/sl-k8s-calico/stacklight/server.yml
index 7b91adf..a1aaf26 100644
--- a/classes/cluster/sl-k8s-calico/stacklight/server.yml
+++ b/classes/cluster/sl-k8s-calico/stacklight/server.yml
@@ -38,7 +38,7 @@
     docker_image_remote_agent: docker-prod-virtual.docker.mirantis.net/openstack-docker/telegraf:latest
     docker_image_remote_storage_adapter: docker-prod-virtual.docker.mirantis.net/openstack-docker/remote_storage_adapter:latest
     docker_image_prometheus_relay: docker-prod-virtual.docker.mirantis.net/openstack-docker/prometheus_relay:latest
-    docker_image_grafana: grafana/grafana:5.0.3
+    docker_image_grafana: grafana/grafana:5.1.3
     docker_influxdb_image: influxdb:1.2
     grafana_admin_password: admin
     keepalived_prometheus_vip_address: ${_param:cluster_vip_address}