"steppedLine": false,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "sum(istio_build) by (component, tag)",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "{{ component }}: {{ tag }}",
          "refId": "A"
        }
      ],