e2e: add kind VolumeGroupSnapshotClass test data (#10582)

* e2e: add kind VolumeGroupSnapshotClass test data

Velero selects a VolumeGroupSnapshotClass by the
velero.io/csi-volumegroupsnapshot-class label, and csi-driver-host-path
ships no VolumeGroupSnapshotClass at all, so there is nothing for the
selector to find on a kind cluster. Any VolumeGroupSnapshot e2e coverage
needs a class to exist first.

Add the kind entry alongside the existing volume-snapshot-class test
data, following the same layout and naming. Verified against a kind
cluster running external-snapshotter v8.6.0 and csi-driver-host-path:
applying this file and creating a VolumeGroupSnapshot that selects two
labelled PVCs reaches readyToUse with both member snapshots ready.

Nothing applies this file yet. It is a prerequisite for the
VolumeGroupSnapshot specs tracked in #7507, kept separate so the class
can be reviewed on its own.

Signed-off-by: krishhna24 <krishhnatupedev@gmail.com>

* Add changelog for #10582

Signed-off-by: krishhna24 <krishhnatupedev@gmail.com>

---------

Signed-off-by: krishhna24 <krishhnatupedev@gmail.com>

changelogs/unreleased/10582-krishhna24

@@ -0,0 +1 @@
+Add kind VolumeGroupSnapshotClass e2e test data

test/testdata/volume-group-snapshot-class/kind.yaml

@@ -0,0 +1,9 @@
+---
+apiVersion: groupsnapshot.storage.k8s.io/v1beta2
+deletionPolicy: Delete
+driver: hostpath.csi.k8s.io
+kind: VolumeGroupSnapshotClass
+metadata:
+  labels:
+    velero.io/csi-volumegroupsnapshot-class: "true"
+  name: e2e-volume-group-snapshot-class