Add RBD block example

examples/rbd/pod-block.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: csirbd-block-pod
+spec:
+  containers:
+   - name: web-server
+     image: nginx
+     volumeDevices:
+       - name: data
+         devicePath: /dev/vda 
+  volumes:
+   - name: data
+     persistentVolumeClaim:
+       claimName: rbd-block-pvc
+       readOnly: false

examples/rbd/pvc-block.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: rbd-block-pvc
+spec:
+  volumeMode: Block
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+  storageClassName: csi-rbd