Updated test and added History

Author: KARTIK KHULLAR

src/storage-mover/HISTORY.rst

@@ -3,6 +3,10 @@
 Release History
 ===============
 
+1.2.1
++++++
+* Added system assigned MI creation as part of az storage-mover create-for-storage-container command.
+
 1.2.0
 +++++
 * Updated to the 2025-07-01 GA API version. 

src/storage-mover/azext_storage_mover/custom.py

@@ -23,8 +23,7 @@ def _get_args_for_endpoint_for_storage_container(endpoint_name, resource_group,
         "storage_blob_container": {
             "blob_container_name": blob_container_name,
             "storage_account_resource_id": storage_account_resource_id,
-        },
-        "mi_system_assigned": "True"
+        }
     }
     return args
 
@@ -34,6 +33,7 @@ def endpoint_create_for_storage_container(cmd, endpoint_name, resource_group, st
     Create_Endpoint = Create(cmd.loader)
     args = _get_args_for_endpoint_for_storage_container(endpoint_name, resource_group, storage_mover_name,
                                                         blob_container_name, storage_account_resource_id, description)
+    args["mi_system_assigned"] = "True"
     return Create_Endpoint(args)