feat(linstor): configure VolumeSnapshotClasses for relocation and Velero

Enable relocate-after-restore on the default linstor-snapshots class
so that PVCs restored from snapshots get replicas relocated to optimal
nodes.

Add a separate linstor-snapshots-velero class with the Velero
annotation and without relocation, so Velero's temporary data mover
PVCs are not relocated unnecessarily.

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

packages/system/linstor/templates/volumesnapshotclass.yaml

@@ -6,3 +6,14 @@ metadata:
  name: linstor-snapshots
 driver: linstor.csi.linbit.com
 deletionPolicy: Delete
+parameters:
+  snap.linstor.csi.linbit.com/relocate-after-restore: "true"
+---
+apiVersion: snapshot.storage.k8s.io/v1
+kind: VolumeSnapshotClass
+metadata:
+ annotations:
+   velero.io/csi-volumesnapshot-class: "true"
+ name: linstor-snapshots-ephemeral
+driver: linstor.csi.linbit.com
+deletionPolicy: Delete