flake8: ignore F405, fixes #1185

We know that star imports have their issues and we only have one of them,
for good reasons. Thus, we switch off that new F405 test/message.

setup.cfg

@@ -5,7 +5,7 @@ python_files = testsuite/*.py
 # please note that the values are adjusted so that they do not cause failures
 # with existing code. if you want to change them, you should first fix all
 # flake8 failures that appear with your change.
-ignore = E122,E123,E125,E126,E127,E128,E226,E402,F401,F811
+ignore = E122,E123,E125,E126,E127,E128,E226,E402,F401,F405,F811
 # line length long term target: 120
 max-line-length = 255
 exclude = build,dist,.git,.idea,.cache,.tox,docs/conf.py