Add dashboards and datasources, update flow config

Signed-off-by: Michel Hollands <michel.hollands@grafana.com>

charts/meta-monitoring/templates/grafana/configmap-1.yaml

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+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: loki-dashboards-1
+  namespace: {{ $.Release.Namespace }}
+data:
+  "loki-chunks.json": |
+    {{ $.Files.Get "src/dashboards/loki-chunks.json" | fromJson | toJson }}
+  "loki-deletion.json": |
+    {{ $.Files.Get "src/dashboards/loki-deletion.json" | fromJson | toJson }}
+  "loki-logs.json": |
+    {{ $.Files.Get "src/dashboards/loki-logs.json" | fromJson | toJson }}
+  "loki-mixin-recording-rules.json": |
+    {{ $.Files.Get "src/dashboards/loki-mixin-recording-rules.json" | fromJson | toJson }}
+  "loki-operational.json": |
+    {{ $.Files.Get "src/dashboards/loki-operational.json" | fromJson | toJson }}

charts/meta-monitoring/templates/grafana/configmap-2.yaml

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+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: loki-dashboards-2
+  namespace: {{ $.Release.Namespace }}
+data:
+  "loki-reads-resources.json": |
+    {{ $.Files.Get "src/dashboards/loki-reads-resources.json" | fromJson | toJson }}
+  "loki-reads.json": |
+    {{ $.Files.Get "src/dashboards/loki-reads.json" | fromJson | toJson }}
+  "loki-retention.json": |
+    {{ $.Files.Get "src/dashboards/loki-retention.json" | fromJson | toJson }}
+  "loki-writes-resources.json": |
+    {{ $.Files.Get "src/dashboards/loki-writes-resources.json" | fromJson | toJson }}
+  "loki-writes.json": |
+    {{ $.Files.Get "src/dashboards/loki-writes.json" | fromJson | toJson }}

charts/meta-monitoring/templates/grafana/dashboard.yaml

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+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: loki-dashboards-provisioning
+  namespace: {{ $.Release.Namespace }}
+data:
+  dashboards.yaml: |
+    ---
+    apiVersion: 1
+    providers:
+      - disableDeletion: true
+        editable: false
+        folder: Loki
+        name: loki-1
+        options:
+          path: /var/lib/grafana/dashboards/loki-1
+        orgId: 1
+        type: file
+      - disableDeletion: true
+        editable: false
+        folder: Loki
+        name: loki-2
+        options:
+          path: /var/lib/grafana/dashboards/loki-2
+        orgId: 1
+        type: file

charts/meta-monitoring/templates/grafana/datasources.yaml

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+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: loki-datasources-provisioning
+  namespace: {{ $.Release.Namespace }}
+data:
+  datasources.yaml: |
+    # Configuration file version
+    apiVersion: 1
+
+    # List of data sources to delete from the database.
+    deleteDatasources:
+      - name: Loki 
+        orgId: 1
+
+    # List of data sources to insert/update depending on what's
+    # available in the database.
+    datasources:
+      # <string, required> Sets the name you use to refer to
+      # the data source in panels and queries.
+      - name: Loki
+        # <string, required> Sets the data source type.
+        type: loki
+        # <int> Sets the organization id. Defaults to orgId 1.
+        orgId: 1
+        # <string> Sets a custom UID to reference this
+        # data source in other parts of the configuration.
+        # If not specified, Grafana generates one.
+        uid: loki_ds
+        # <string> Sets the data source's URL, including the
+        # port.
+        url: http://loki-gateway.{{- $.Release.Namespace -}}.svc.cluster.local
+        # <bool> Toggles whether the data source is pre-selected
+        # for new panels. You can set only one default
+        # data source per organization.
+        isDefault:
+        # <bool> Allows users to edit data sources from the
+        # Grafana UI.
+        editable: true
+      - name: Mimir
+        # <string, required> Sets the data source type.
+        type: prometheus
+        # <int> Sets the organization id. Defaults to orgId 1.
+        orgId: 1
+        # <string> Sets a custom UID to reference this
+        # data source in other parts of the configuration.
+        # If not specified, Grafana generates one.
+        uid: mimir_ds
+        # <string> Sets the data source's URL, including the
+        # port.
+        url: http://{{- $.Release.Name -}}-mimir-nginx.{{- $.Release.Namespace -}}.svc:80/prometheus
+        # <bool> Toggles whether the data source is pre-selected
+        # for new panels. You can set only one default
+        # data source per organization.
+        isDefault:
+        # <bool> Allows users to edit data sources from the
+        # Grafana UI.
+        editable: true

charts/meta-monitoring/templates/grafana/grafana.yaml

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+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: grafana-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: grafana
+  name: grafana
+spec:
+  selector:
+    matchLabels:
+      app: grafana
+  template:
+    metadata:
+      labels:
+        app: grafana
+    spec:
+      securityContext:
+        fsGroup: 472
+        supplementalGroups:
+          - 0
+      containers:
+        - name: grafana
+          image: grafana/grafana:10.0.0
+          imagePullPolicy: IfNotPresent
+          ports:
+            - containerPort: 3000
+              name: http-grafana
+              protocol: TCP
+          readinessProbe:
+            failureThreshold: 3
+            httpGet:
+              path: /robots.txt
+              port: 3000
+              scheme: HTTP
+            initialDelaySeconds: 10
+            periodSeconds: 30
+            successThreshold: 1
+            timeoutSeconds: 2
+          livenessProbe:
+            failureThreshold: 3
+            initialDelaySeconds: 30
+            periodSeconds: 10
+            successThreshold: 1
+            tcpSocket:
+              port: 3000
+            timeoutSeconds: 1
+          resources:
+            requests:
+              cpu: 250m
+              memory: 750Mi
+          volumeMounts:
+            - mountPath: /var/lib/grafana
+              name: grafana-pv
+            - mountPath: /var/lib/grafana/dashboards/loki-1
+              name: loki-dashboards-1
+            - mountPath: /var/lib/grafana/dashboards/loki-2
+              name: loki-dashboards-2
+            - mountPath: /etc/grafana/provisioning/dashboards
+              name: loki-dashboards-provisioning
+            - mountPath: /etc/grafana/provisioning/datasources
+              name: loki-datasources-provisioning
+      volumes:
+        - name: grafana-pv
+          persistentVolumeClaim:
+            claimName: grafana-pvc
+        - name: loki-dashboards-provisioning
+          configMap:
+            name: loki-dashboards-provisioning
+        - name: loki-datasources-provisioning
+          configMap:
+            name: loki-datasources-provisioning
+        - name: loki-dashboards-1
+          configMap:
+            name: loki-dashboards-1
+        - name: loki-dashboards-2
+          configMap:
+            name: loki-dashboards-2
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: grafana
+spec:
+  ports:
+    - port: 3000
+      protocol: TCP
+      targetPort: http-grafana
+  selector:
+    app: grafana
+  sessionAffinity: None
+  type: ClusterIP  # Make this configurable