[Checkins] [zopefoundation/ZEO] 9266c3: Use a temporary directory in tests

[Marius Gedminas]

  Branch: refs/heads/use-temp-dir-please
  Home:   https://github.com/zopefoundation/ZEO
  Commit: 9266c3db0a3130ffb523ad79aeb50da49136f3d5
      https://github.com/zopefoundation/ZEO/commit/9266c3db0a3130ffb523ad79aeb50da49136f3d5
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2019-04-25 (Thu, 25 Apr 2019)

  Changed paths:
    M src/ZEO/tests/test_client_side_conflict_resolution.py
    M tox.ini

  Log Message:
  -----------
  Use a temporary directory in tests

Otherwise when you run `tox` this test will create a `data.fs` using
Python 2 and then the same test will fail on Python 3 because there
already is a `data.fs` in the current working directory, but it has an
incompatible format.