Add fencing annotations to DRClusters

Add fencing annotations to DRClusters, enabling fencing prior to application failover.

1. Add the following annotations to all the DRCluster resources.

   These annotations include details the NetworkFence resource uses before testing application failover.

   Use this edit command, replacing <drcluster_name> with your unique name.

   oc edit drcluster <drcluster_name>

   apiVersion: ramendr.openshift.io/v1alpha1
   kind: DRCluster
   metadata:
     ## Add this section
     annotations:
       drcluster.ramendr.openshift.io/storage-clusterid: openshift-storage
       drcluster.ramendr.openshift.io/storage-driver: openshift-storage.rbd.csi.ceph.com
       drcluster.ramendr.openshift.io/storage-secret-name: rook-csi-rbd-provisioner
       drcluster.ramendr.openshift.io/storage-secret-namespace: openshift-storage
   [...]

   Example output:

   drcluster.ramendr.openshift.io/ocp4perf1 edited

2. Make sure to add these annotations for both DRCluster resources (for example: ocp4perf1 and ocp4perf2).