add servername_all template var

salt/grafana/defaults.yaml

@@ -2339,7 +2339,7 @@ grafana:
     eval:
       templating:
         list:
-          - servername_standalone
+          - servername_eval
           - role
           - containers
           - manint

salt/grafana/templates/servername_eval.json

@@ -0,0 +1,29 @@
+{
+    "allValue": null,
+    "current": {
+      "selected": true,
+      "tags": [],
+      "text": [],
+      "value": []
+    },
+    "datasource": "InfluxDB",
+    "definition": "show tag values with key=\"host\" WHERE (\"role\" =~ /^$role$/)",
+    "description": "",
+    "error": null,
+    "hide": 0,
+    "includeAll": true,
+    "label": "Node",
+    "multi": true,
+    "name": "servername",
+    "options": [],
+    "query": "show tag values with key=\"host\" WHERE (\"role\" =~ /^$role$/)",
+    "refresh": 1,
+    "regex": "",
+    "skipUrlSync": false,
+    "sort": 1,
+    "tagValuesQuery": "",
+    "tags": [],
+    "tagsQuery": "",
+    "type": "query",
+    "useTags": false
+  }