Add Prom+Grafana monitoring stack

manifests/monitoring/prometheus/kustomization.yaml

@@ -0,0 +1,12 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: gitops-system
+resources:
+  - account.yaml
+  - rbac.yaml
+  - service.yaml
+  - deployment.yaml
+configMapGenerator:
+  - name: prometheus
+    files:
+      - prometheus.yml