null,
"multi": false,
"name": "datasource",
"options": [],
"query": "prometheus...},
{
"allValue": null,
"datasource": "${datasource}",
"definition": "label_values...multi": false,
"name": "cluster",
"options": [],
"query": {
"query": "label_values...: false,
"name": "namespace",
"options": [],
"query": {
"query": "label_values...multi": false,
"name": "pod",
"options": [],
"query": {
"query": "label_values