core: perform cleanup for failure during clone LSM phase

In case of Live Storage Migration failure during
"LiveDiskMigrateStage.CLONE_IMAGE_STRUCTURE" the cleanup
was skipped. It should be performed in order to free the already
allocated space on the target Storage Domain.

Signed-off-by: Pavel Bar <pbar@redhat.com>
Bug-Url: https://bugzilla.redhat.com/2102149

backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/storage/lsm/LiveMigrateDiskCommand.java

@@ -746,7 +746,6 @@ private String getDiskIsBeingMigratedMessage(Disk disk) {
 
     private void cleanupDestDiskAfterFailure() {
         if (getParameters().getLiveDiskMigrateStage() == LiveDiskMigrateStage.CREATE_SNAPSHOT ||
-                getParameters().getLiveDiskMigrateStage() == LiveDiskMigrateStage.CLONE_IMAGE_STRUCTURE ||
                 getParameters().getLiveDiskMigrateStage() == LiveDiskMigrateStage.SOURCE_IMAGE_DELETION) {
             return;
         }