feat(kube-system): Add snapshot-controller

bootstrap/kube-system/snapshot-controller-crds.yaml

+---
+apiVersion: source.toolkit.fluxcd.io/v1beta1
+kind: GitRepository
+metadata:
+  name: external-snapshotter
+  namespace: kube-system
+spec:
+  interval: 24h
+  ref:
+    tag: v6.2.1
+  url: https://github.com/kubernetes-csi/external-snapshotter.git
+  ignore: |
+    # exclude all
+    /*
+    # Only pull the relevant manifests
+    !/deploy/kubernetes/snapshot-controller
+    !/client/config/crd
+---
+apiVersion: kustomize.toolkit.fluxcd.io/v1beta2
+kind: Kustomization
+metadata:
+  name: external-snapshotter-crd
+  namespace: kube-system
+spec:
+  interval: 10m0s
+  path: ./client/config/crd
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: external-snapshotter
+    namespace: kube-system
\ No newline at end of file

bootstrap/kustomization.yaml

-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-resources:
-  - calico
-  - system-upgrades

infrastructure/kube-system/kustomization.yaml

@@ -6,4 +6,5 @@ resources:
   - quorum.yaml
   - descheduler.yaml
   - metrics-server.yaml
+  - snapshot-controller.yaml
   - ../../shared/networkpolicies/allow-from-all-namespaces.yaml

infrastructure/kube-system/snapshot-controller.yaml

+---
+apiVersion: kustomize.toolkit.fluxcd.io/v1beta2
+kind: Kustomization
+metadata:
+  name: external-snapshotter
+  namespace: kube-system
+spec:
+  interval: 10m0s
+  path: ./deploy/kubernetes/snapshot-controller
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: external-snapshotter
+    namespace: kube-system
+  dependsOn:
+    - name: external-snapshotter-crd