text: Title: test_verbosity_guess_miss_match fails with sources from PyPI
  Body: If you take tox sources from PyPI, there is no `tox.ini` file in them, which makes `test_verbosity_guess_miss_match` fail because tox complains about missing config file and therefore the output is not as expected.
  
  The output is:
  ```
  tests/config/cli/test_parse.py::test_verbosity_guess_miss_match FAILED
  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> traceback >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  
  capsys = <_pytest.capture.CaptureFixture object at 0x7fc51dd0b350>
  
      def test_verbosity_guess_miss_match(capsys: CaptureFixture) -> None:
          result = get_options("-rv")
          assert result.parsed.verbosity == 3
      
          assert logging.getLogger().level == logging.INFO
      
          for name in ("distlib.util", "filelock"):
              logger = logging.getLogger(name)
              assert logger.disabled
          logging.error("E")
          logging.warning("W")
          logging.info("I")
          logging.debug("D")
      
          out, err = capsys.readouterr()
  >       assert out == "ROOT: E\nROOT: W\nROOT: I\n"
  E       AssertionError: assert 'ROOT: No tox... W\nROOT: I\n' == 'ROOT: E\nROOT: W\nROOT: I\n'
  E         + ROOT: No tox.ini or setup.cfg or pyproject.toml found, assuming empty tox.ini at /builddir/build/BUILD/tox-4.2.6
  E           ROOT: E
  E           ROOT: W
  E           ROOT: I
  
  capsys     = <_pytest.capture.CaptureFixture object at 0x7fc51dd0b350>
  err        = ''
  logger     = <Logger filelock (INFO)>
  name       = 'filelock'
  out        = 'ROOT: No tox.ini or setup.cfg or pyproject.toml found, assuming empty tox.ini at /builddir/build/BUILD/tox-4.2.6\nROOT: E\nROOT: W\nROOT: I\n'
  result     = Options(parsed=Parsed(colored='no', verbose=3, quiet=0, exit_and_dump_after=0, config_file=None, work_dir=None, root_d...acy': <function legacy at 0x7fc51df1e0c0>, 'le': <function legacy at 0x7fc51df1e0c0>}, log_handler=<ToxHandler (INFO)>)
  
  tests/config/cli/test_parse.py:35: AssertionError
  ```