L2SS-844: Replace grafana dashboards by ones from central repo.

.gitmodules

 [submodule "tangostationcontrol/tangostationcontrol/toolkit/libhdbpp-python"]
 	path = tangostationcontrol/tangostationcontrol/toolkit/libhdbpp-python
 	url = https://gitlab.com/tango-controls/hdbpp/libhdbpp-python.git
+[submodule "docker-compose/grafana/dashboards"]
+	path = docker-compose/grafana/dashboards
+	url = https://git.astron.nl/lofar2.0/grafana-station-dashboards.git

dashboards @ 276dc03f

+Subproject commit 276dc03f3fac30fa618e795db1df9cf8f6794cad

docker-compose/grafana/dashboards/docker.json

-{
-  "annotations": {
-    "list": [
-      {
-        "builtIn": 1,
-        "datasource": "-- Grafana --",
-        "enable": true,
-        "hide": true,
-        "iconColor": "rgba(0, 211, 255, 1)",
-        "name": "Annotations & Alerts",
-        "target": {
-          "limit": 100,
-          "matchAny": false,
-          "tags": [],
-          "type": "dashboard"
-        },
-        "type": "dashboard"
-      }
-    ]
-  },
-  "description": "",
-  "editable": true,
-  "gnetId": null,
-  "graphTooltip": 0,
-  "id": 2,
-  "links": [],
-  "panels": [
-    {
-      "datasource": "Prometheus",
-      "description": "Which Docker containers are running on the station.",
-      "fieldConfig": {
-        "defaults": {
-          "color": {
-            "mode": "thresholds"
-          },
-          "custom": {
-            "fillOpacity": 90,
-            "lineWidth": 0
-          },
-          "mappings": [],
-          "thresholds": {
-            "mode": "absolute",
-            "steps": [
-              {
-                "color": "red",
-                "value": null
-              },
-              {
-                "color": "green",
-                "value": 1
-              }
-            ]
-          }
-        },
-        "overrides": []
-      },
-      "gridPos": {
-        "h": 14,
-        "w": 19,
-        "x": 0,
-        "y": 0
-      },
-      "id": 2,
-      "options": {
-        "alignValue": "center",
-        "legend": {
-          "displayMode": "hidden",
-          "placement": "bottom"
-        },
-        "mergeValues": true,
-        "rowHeight": 0.9,
-        "showValue": "never",
-        "tooltip": {
-          "mode": "single"
-        }
-      },
-      "pluginVersion": "8.1.2",
-      "targets": [
-        {
-          "exemplar": true,
-          "expr": "device_attribute{device=\"stat/docker/1\",name=~\".*_R\",name!=\"version_R\"}",
-          "instant": false,
-          "interval": "",
-          "legendFormat": "{{name}}",
-          "refId": "A"
-        }
-      ],
-      "title": "Docker Containers",
-      "transformations": [],
-      "type": "state-timeline"
-    }
-  ],
-  "schemaVersion": 30,
-  "style": "dark",
-  "tags": [],
-  "templating": {
-    "list": []
-  },
-  "time": {
-    "from": "now-30m",
-    "to": "now"
-  },
-  "timepicker": {},
-  "timezone": "",
-  "title": "Docker",
-  "uid": "docker",
-  "version": 1
-}

docker-compose/grafana/grafana.ini

@@ -290,7 +290,7 @@ enable_gzip = true
 ;min_refresh_interval = 5s
 
 # Path to the default home dashboard. If this value is empty, then Grafana uses StaticRootPath + "dashboards/home.json"
-default_home_dashboard_path = /var/lib/grafana/dashboards/home2.json
+default_home_dashboard_path = /var/lib/grafana/dashboards/home.json
 
 #################################### Users ###############################
 [users]