add user rm

Signed-off-by: ckulal <[email protected]>

rgw/v2/tests/s3_swift/user_create.py

@@ -111,6 +111,7 @@ def test_exec(config, ssh_con):
             reusable.validate_default_placement_and_storageclass_for_user(
                 user_name, placement_id, storage_class
             )
+            utils.exec_shell_cmd(f"radosgw-admin user rm --purge-keys --purge-data --uid={user_name}")
 
         is_multisite = utils.is_cluster_multisite()
         if is_multisite: