[Checkins] [zopefoundation/Persistence] 53ea25: Fixed travis yaml

[GitHub]

  Branch: refs/heads/python3.7support
  Home:   https://github.com/zopefoundation/Persistence
  Commit: 53ea25ae86d653eec1f1b24954225b3244f1f591
      https://github.com/zopefoundation/Persistence/commit/53ea25ae86d653eec1f1b24954225b3244f1f591
  Author: Jeremy Kolbe <jk at gocept.com>
  Date:   2018-10-02 (Tue, 02 Oct 2018)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Fixed travis yaml



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