Add dashboards and datasources, update flow config

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

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

@@ -0,0 +1,27 @@
+---
+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