e2e: add example yamls for RWOP POD and PVC

This commit add example yamls for RBD and CephFS Pod and PVCs

RBD:
 Raw Block Volume and File Mode PVCs with RWOP accessmode
 Raw Block Volume POD and FileMode POD yamls referring RWOP PVC

CephFS:
 RWOP PVC and POD yaml referring RWOP PVC

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

examples/rbd/raw-block-pod-rwop.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: csi-rbd-demo-rwop-pod
+spec:
+  containers:
+    - name: centos
+      image: quay.io/centos/centos:latest
+      command: ["/bin/sleep", "infinity"]
+      volumeDevices:
+        - name: data
+          devicePath: /dev/xvda
+  volumes:
+    - name: data
+      persistentVolumeClaim:
+        claimName: raw-block-rwop-pvc