doc: Add prefix for naming subvolumes and snapshots

Updated storageclass and snapshotclass
to include the name prefix for naming
subvolumes and snapshots.

Fixes: #1087

Signed-off-by: Yug Gupta <ygupta@redhat.com>

examples/cephfs/storageclass.yaml

@@ -41,6 +41,11 @@ parameters:
   # If omitted, default volume mounter will be used - this is
   # determined by probing for ceph-fuse and mount.ceph
   # mounter: kernel
+
+  # (optional) Prefix to use for naming subvolumes.
+  # If omitted, defaults to "csi-vol-".
+  # volumeNamePrefix: "foo-bar-"
+
 reclaimPolicy: Delete
 allowVolumeExpansion: true
 mountOptions:

examples/rbd/snapshotclass.yaml

@@ -14,6 +14,10 @@ parameters:
   # represent the Ceph cluster in clusterID below
   clusterID: <cluster-id>
 
+  # Prefix to use for naming RBD snapshots.
+  # If omitted, defaults to "csi-snap-".
+  # snapshotNamePrefix: "foo-bar-"
+
   csi.storage.k8s.io/snapshotter-secret-name: csi-rbd-secret
   csi.storage.k8s.io/snapshotter-secret-namespace: default
 deletionPolicy: Delete

examples/rbd/storageclass.yaml

@@ -43,6 +43,10 @@ parameters:
    # uncomment the following to use rbd-nbd as mounter on supported nodes
    # mounter: rbd-nbd
 
+   # Prefix to use for naming RBD images.
+   # If omitted, defaults to "csi-vol-".
+   # volumeNamePrefix: "foo-bar-"
+
    # Instruct the plugin it has to encrypt the volume
    # By default it is disabled. Valid values are "true" or "false".
    # A string is expected here, i.e. "true", not true.