[Checkins] [zopefoundation/zope.app.security] fea013: Stop using deprecated --use-mirrors

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zope.app.security
  Commit: fea0132064271e5374b09182ec7f02457aaefff6
      https://github.com/zopefoundation/zope.app.security/commit/fea0132064271e5374b09182ec7f02457aaefff6
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2015-11-08 (Sun, 08 Nov 2015)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Stop using deprecated --use-mirrors