[Checkins] [zopefoundation/z3c.authenticator] bcefc9: Use the test extra in tox.ini and .travis.yml

[Marius Gedminas]

  Branch: refs/heads/drop-py26-srsly
  Home:   https://github.com/zopefoundation/z3c.authenticator
  Commit: bcefc995973a288d5e30755a93a03ed0153c8dc3
      https://github.com/zopefoundation/z3c.authenticator/commit/bcefc995973a288d5e30755a93a03ed0153c8dc3
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2019-04-25 (Thu, 25 Apr 2019)

  Changed paths:
    M .travis.yml
    M tox.ini

  Log Message:
  -----------
  Use the test extra in tox.ini and .travis.yml