tests: don't use deprecated status_code

tests/test_manager.py

@@ -47,7 +47,7 @@ def test_add_connector(admin_user):
     resp.forms[0]['username'] = 'username'
     resp.forms[0]['password'] = 'password'
     resp = resp.forms[0].submit()
-    assert resp.status_code == 302
+    assert resp.status_int == 302
     assert resp.location == 'http://localhost:80/ovh/test-connector/'
     resp = resp.follow()
     assert 'OVH - Test Connector' in resp.body