cleanup: pass volumeGroupSnapshotterBase by pointer

This commit modifies code to pass volumeGroupSnapshotterBase
by pointer to address the following linter error.
```
hugeParam: v is heavy (80 bytes); consider passing it by pointer (gocritic)
func (v volumeGroupSnapshotterBase) CreateVolumeGroupSnapshotClass(
```

Signed-off-by: Rakshith R <[email protected]>

e2e/volumegroupsnapshot_base.go

@@ -265,7 +265,7 @@ func (v *volumeGroupSnapshotterBase) DeletePods(pods []*v1.Pod) error {
 	return nil
 }
 
-func (v volumeGroupSnapshotterBase) CreateVolumeGroupSnapshotClass(
+func (v *volumeGroupSnapshotterBase) CreateVolumeGroupSnapshotClass(
 	groupSnapshotClass *groupsnapapi.VolumeGroupSnapshotClass,
 ) error {
 	return wait.PollUntilContextTimeout(
@@ -288,7 +288,7 @@ func (v volumeGroupSnapshotterBase) CreateVolumeGroupSnapshotClass(
 		})
 }
 
-func (v volumeGroupSnapshotterBase) CreateVolumeGroupSnapshot(name,
+func (v *volumeGroupSnapshotterBase) CreateVolumeGroupSnapshot(name,
 	volumeGroupSnapshotClassName string, labels map[string]string,
 ) (*groupsnapapi.VolumeGroupSnapshot, error) {
 	namespace := v.namespace
@@ -358,7 +358,7 @@ func (v volumeGroupSnapshotterBase) CreateVolumeGroupSnapshot(name,
 	return groupSnapshot, nil
 }
 
-func (v volumeGroupSnapshotterBase) DeleteVolumeGroupSnapshot(volumeGroupSnapshotName string) error {
+func (v *volumeGroupSnapshotterBase) DeleteVolumeGroupSnapshot(volumeGroupSnapshotName string) error {
 	namespace := v.namespace
 	ctx := context.TODO()
 	err := v.groupclient.VolumeGroupSnapshots(namespace).Delete(
@@ -397,7 +397,7 @@ func (v volumeGroupSnapshotterBase) DeleteVolumeGroupSnapshot(volumeGroupSnapsho
 		})
 }
 
-func (v volumeGroupSnapshotterBase) DeleteVolumeGroupSnapshotClass(groupSnapshotClassName string) error {
+func (v *volumeGroupSnapshotterBase) DeleteVolumeGroupSnapshotClass(groupSnapshotClassName string) error {
 	ctx := context.TODO()
 	err := v.groupclient.VolumeGroupSnapshotClasses().Delete(
 		ctx, groupSnapshotClassName, metav1.DeleteOptions{})