handle error: storage belongs to different cluster

Author: BalabaDmitri

tests/integration/ha_tests/test_self_healing.py

@@ -589,13 +589,13 @@ async def test_deploy_zero_units(ops_test: OpsTest):
         unit_ip_addresses.append(await get_unit_ip(ops_test, unit.name))
 
         # Save detached storage ID
-        if await unit.is_leader_from_status:
+        if await unit.is_leader_from_status():
             primary_storage = storage_id(ops_test, unit.name)
 
     logger.info(f"get storage id app: {SECOND_APPLICATION}")
     second_storage = ""
     for unit in ops_test.model.applications[SECOND_APPLICATION].units:
-        if await unit.is_leader_from_status:
+        if await unit.is_leader_from_status():
             second_storage = storage_id(ops_test, unit.name)
             break