add cert-manager HelmRelease and repository configuration

cluster/helm/cert-manager/cert-manager-release.yml

@@ -0,0 +1,27 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: cert-manager
+  namespace: cert-manager
+spec:
+  interval: 5m
+  chart:
+    spec:
+      chart: cert-manager
+      version: "v1.17.2"
+      sourceRef:
+        kind: HelmRepository
+        name: jetstack
+        namespace: flux-system
+      interval: 1m
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    remediation:
+      retries: 3
+  values:
+    crds:
+      enable: true
+    installCRDs: true

cluster/helm/cert-manager/cert-manager-repo.yml

@@ -0,0 +1,9 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: jetstack
+  namespace: flux-system
+spec:
+  interval: 24h
+  url: https://charts.jetstack.io