nfs-client-provisioner initial code

(cherry picked from commit 5a51799e23)

deploy/class.yaml

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+apiVersion: storage.k8s.io/v1beta1
+kind: StorageClass
+metadata:
+  name: managed-nfs-storage
+provisioner: fuseim.pri/ifs # or choose another name, must match deployment's env PROVISIONER_NAME'

deploy/deployment.yaml

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+kind: Deployment
+apiVersion: extensions/v1beta1
+metadata:
+  name: nfs-client-provisioner
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate 
+  template:
+    metadata:
+      labels:
+        app: nfs-client-provisioner
+    spec:
+      containers:
+        - name: nfs-client-provisioner
+          image: quay.io/jackieli/nfs-client-provisioner:v1
+          volumeMounts:
+            - name: nfs-client-root
+              mountPath: /persistentvolumes
+          env:
+            - name: PROVISIONER_NAME
+              value: fuseim.pri/ifs
+            - name: NFS_SERVER
+              value: 10.10.10.60
+            - name: NFS_PATH
+              value: /ifs/kubernetes
+      volumes:
+        - name: nfs-client-root
+          nfs:
+            server: 10.10.10.60
+            path: /ifs/kubernetes

deploy/test-claim.yaml

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+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: test-claim
+  annotations:
+    volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
+spec:
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 1Mi

deploy/test-pod.yaml

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+kind: Pod
+apiVersion: v1
+metadata:
+  name: test-pod
+spec:
+  containers:
+  - name: test-pod
+    image: gcr.io/google_containers/busybox:1.24
+    command:
+      - "/bin/sh"
+    args:
+      - "-c"
+      - "touch /mnt/SUCCESS && exit 0 || exit 1"
+    volumeMounts:
+      - name: nfs-pvc
+        mountPath: "/mnt"
+  restartPolicy: "Never"
+  volumes:
+    - name: nfs-pvc
+      persistentVolumeClaim:
+        claimName: test-claim