add helm repo to flux for emqx

kubernetes/flux/repositories/helm/emqx.yaml

@@ -0,0 +1,10 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/source.toolkit.fluxcd.io/helmrepository_v1.json
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: emqx
+  namespace: flux-system
+spec:
+  interval: 2h
+  url: https://repos.emqx.io/charts

kubernetes/flux/repositories/helm/kustomization.yaml

@@ -15,6 +15,7 @@ resources:
  - descheduler.yaml
  - dragonflydb.yaml
  - elastic.yaml
+ - emqx.yaml
  - external-secrets.yaml
  - fairwinds.yaml
  - grafana.yaml