Add Grafana dashboard provisioning configuration

monitoring/grafana/provisioning/dashboards/default.yml

@@ -0,0 +1,13 @@
+apiVersion: 1
+
+providers:
+  - name: 'EVPN Fabric Dashboards'
+    orgId: 1
+    folder: 'EVPN Fabric'
+    folderUid: 'evpn-fabric'
+    type: file
+    disableDeletion: false
+    editable: true
+    updateIntervalSeconds: 30
+    options:
+      path: /var/lib/grafana/dashboards