Update integration test with new SPN ID (#4704)

## Changes
Update test will new SPN ID with a short term fix. Added a new bug for
fixing it later.

TODO:
http://github.com/databrickslabs/ucx/issues/4703

Author: pritishpai

tests/integration/hive_metastore/test_migrate.py

@@ -890,7 +890,10 @@ def test_migrate_table_in_mount(
 
 
 def test_migrate_external_tables_with_spn_azure(
-    ws: WorkspaceClient, prepared_principal_acl, make_cluster_permissions, make_cluster
+    ws: WorkspaceClient,
+    prepared_principal_acl,
+    make_cluster_permissions,
+    make_cluster,
 ) -> None:
     if not ws.config.is_azure:
         pytest.skip("temporary: only works in azure test env")
@@ -900,7 +903,7 @@ def test_migrate_external_tables_with_spn_azure(
 
     table_migrate = ctx.tables_migrator
 
-    spn_with_mount_access = "5a11359f-ba1f-483f-8e00-0fe55ec003ed"
+    spn_with_mount_access = ws.dbutils.secrets.get("mounts", "spn_client_id")
     make_cluster_permissions(
         object_id=cluster.cluster_id,
         permission_level=PermissionLevel.CAN_ATTACH_TO,