[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

integration-tests/test_hub.py

@@ -1,18 +1,20 @@
-import requests
-from hubtraf.user import User
-from hubtraf.auth.dummy import login_dummy
-from jupyterhub.utils import exponential_backoff
-import secrets
-import pytest
-from functools import partial
 import asyncio
-import pwd
 import grp
+import pwd
+import secrets
 import subprocess
+from functools import partial
 from os import system
-from tljh.normalize import generate_system_username
+
+import pytest
+import requests
+from hubtraf.auth.dummy import login_dummy
+from hubtraf.user import User
+from jupyterhub.utils import exponential_backoff
 from packaging.version import Version as V
 
+from tljh.normalize import generate_system_username
+
 # Use sudo to invoke it, since this is how users invoke it.
 # This catches issues with PATH
 TLJH_CONFIG_PATH = ["sudo", "tljh-config"]