fix nfs autodelete issue

infrastructure/nfs/kustomization.yaml

@@ -1,9 +1,14 @@
-namespace: nfs-provisioner
-bases:
-  - github.com/kubernetes-sigs/nfs-subdir-external-provisioner//deploy
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
 
+namespace: nfs-provisioner
+
+bases:
 
 resources:
+  - github.com/kubernetes-sigs/nfs-subdir-external-provisioner//deploy
   - namespace.yaml
-patchesStrategicMerge:
-  - nfs_values.yaml
+
+patches:
+  - path: nfs_values.yaml
+  - path: storageclass_values.yaml

infrastructure/nfs/namespace.yaml

@@ -1,5 +1,4 @@
-# namespace.yaml
 apiVersion: v1
 kind: Namespace
 metadata:
-  name: nfs-provisioner
+  name: placeholder

infrastructure/nfs/storageclass_values.yaml

@@ -0,0 +1,6 @@
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: nfs-client
+parameters:
+  onDelete: "retain"