Fix envoy grafana dashboard errors

assets/charts/components/contour/dashboards/envoy.json

@@ -547,7 +547,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -635,7 +635,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -737,7 +737,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -822,7 +822,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -919,7 +919,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "description": "",
       "fill": 1,
       "gridPos": {
@@ -1005,7 +1005,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "description": "",
       "fill": 1,
       "gridPos": {
@@ -1091,7 +1091,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "description": "",
       "fill": 1,
       "gridPos": {
@@ -1177,7 +1177,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "description": "",
       "fill": 1,
       "gridPos": {
@@ -1263,7 +1263,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1349,7 +1349,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1434,7 +1434,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1519,7 +1519,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1604,7 +1604,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1688,7 +1688,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1787,7 +1787,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "fill": 1,
       "gridPos": {
         "h": 8,
@@ -1871,7 +1871,7 @@
       "bars": false,
       "dashLength": 10,
       "dashes": false,
-      "datasource": "prometheus",
+      "datasource": "Prometheus",
       "description": "Displays the number of Requests per Second being performed against each Upstream.",
       "fill": 1,
       "gridPos": {
@@ -1965,7 +1965,7 @@
           "text": "All",
           "value": "$__all"
         },
-        "datasource": "prometheus",
+        "datasource": "Prometheus",
         "hide": 0,
         "includeAll": true,
         "label": null,
@@ -1990,7 +1990,7 @@
             "$__all"
           ]
         },
-        "datasource": "prometheus",
+        "datasource": "Prometheus",
         "hide": 0,
         "includeAll": true,
         "label": null,
@@ -2016,7 +2016,7 @@
             "$__all"
           ]
         },
-        "datasource": "prometheus",
+        "datasource": "Prometheus",
         "hide": 0,
         "includeAll": true,
         "label": "Envoy Pod",