feat: Add grafana and kube-prometheus-stack HelmReleases (#758)

kubernetes/flux/repositories/helm/grafana.yaml

@@ -0,0 +1,9 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: HelmRepository
+metadata:
+  name: grafana
+  namespace: flux-system
+spec:
+  interval: 1h
+  url: https://grafana.github.io/helm-charts

kubernetes/flux/repositories/helm/kustomization.yaml

@@ -6,6 +6,7 @@ resources:
   - ./bjw-s.yaml
   - ./cilium.yaml
   - ./external-dns.yaml
+  - ./grafana.yaml
   - ./hajimari.yaml
   - ./ingress-nginx.yaml
   - ./jetstack.yaml
@@ -13,5 +14,6 @@ resources:
   - ./kubernetes-dashboard.yaml
   - ./metallb.yaml
   - ./metrics-server.yaml
+  - ./prometheus-community.yaml
   - ./stakater.yaml
   - ./weave-gitops.yaml

kubernetes/flux/repositories/helm/prometheus-community.yaml

@@ -0,0 +1,10 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: HelmRepository
+metadata:
+  name: prometheus-community
+  namespace: flux-system
+spec:
+  type: oci
+  interval: 5m
+  url: oci://ghcr.io/prometheus-community/charts