handle error: storage belongs to different cluster

Author: BalabaDmitri

tests/integration/ha_tests/test_self_healing.py

@@ -618,7 +618,7 @@ async def test_deploy_zero_units(ops_test: OpsTest, charm):
     await ops_test.model.wait_for_idle(apps=[APP_NAME, APPLICATION_NAME], status="active", timeout=1500)
 
     logger.info("scaling database to tow unit using foreign cluster's storage")
-    new_unit = await add_unit_with_storage(ops_test, app=app, storage=second_storage)
+    new_unit = await add_unit_with_storage(ops_test, app=app, storage=second_storage, is_blocked=True)
 
     logger.info(f"remove unit {new_unit.name} with storage from application {SECOND_APPLICATION}")
     await ops_test.model.destroy_units(new_unit.name)