doc: example for PVC and Pod using a NFS-volume

Signed-off-by: Niels de Vos <ndevos@redhat.com>

examples/nfs/pod.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: cephcsi-nfs-demo-pod
+spec:
+  containers:
+    - name: web-server
+      image: docker.io/library/nginx:latest
+      volumeMounts:
+        - name: mypvc
+          mountPath: /var/lib/www
+  volumes:
+    - name: mypvc
+      persistentVolumeClaim:
+        claimName: cephcsi-nfs-pvc
+        readOnly: false

examples/nfs/pvc.yaml

@@ -0,0 +1,12 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: cephcsi-nfs-pvc
+spec:
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 1Gi
+  storageClassName: csi-nfs-sc