cleanup with regards to upcoming migration

infrastructure/nfs-provisioner/README.md

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+## How to use
+This deployment exposes a `StorageClass` named `nfs-client` that can be used to create `PersistentVolumeClaim` resources:
+
+
+```
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: test-claim
+  namespace: test-namespace
+spec:
+  storageClassName: nfs-client
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 1Mi
+```
+
+This will create a new folder in the NFS server under `<base-path>/test-namespace-test-claim` and mount it.

infrastructure/nfs-provisioner/kustomization.yaml

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

infrastructure/nfs-provisioner/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: placeholder

infrastructure/nfs-provisioner/nfs_values.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: nfs-client-provisioner
+  name: nfs-client-provisioner
+spec:
+  template:
+    spec:
+      containers:
+        - name: nfs-client-provisioner
+          env:
+            - name: NFS_SERVER
+              value: 192.168.1.157
+            - name: NFS_PATH
+              value: /export/kluster/
+      volumes:
+        - name: nfs-client-root
+          nfs:
+            server: 192.168.1.157
+            path: /export/kluster/

infrastructure/nfs-provisioner/storageclass_values.yaml

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+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: nfs-client
+parameters:
+  archiveOnDelete: "true"
+  pathPattern: "${.PVC.namespace}-${.PVC.name}"