kube-prometheus: Add etcd dashboard

hack/scripts/wrap-dashboard.sh

@@ -15,12 +15,18 @@
 #  * Apply new configmap:
 #      kubectl -n monitoring apply -f manifests/grafana/grafana-cm.yaml
 
-if [ "$#" -ne 1 ]; then
-    echo "Usage: $0 path-to-dashboard.json"
+if [ "$#" -ne 2 ]; then
+    echo "Usage: $0 path-to-dashboard.json grafana-prometheus-datasource-name"
     exit 1
 fi
 
 dashboardjson=$1
+datasource_name=$2
+inputname="DS_PROMETHEUS"
+
+if [ "$datasource_name" -eq "prometheus-etcd" ]; then
+  $inputname="DS_PROMETHEUS-ETCD"
+fi
 
 cat <<EOF
 {
@@ -33,10 +39,10 @@ cat <<EOF
 ,
   "inputs": [
     {
-      "name": "DS_PROMETHEUS",
+      "name": "$inputname",
       "pluginId": "prometheus",
       "type": "datasource",
-      "value": "prometheus"
+      "value": "$datasource_name"
     }
   ],
   "overwrite": true