[Checkins] [zopefoundation/Zope] 630ad5: Add version pins needed by bin/buildout on Python 2.

[Michael Howitz]

  Branch: refs/heads/current-versions
  Home:   https://github.com/zopefoundation/Zope
  Commit: 630ad5ccd4b50bf4cac4c4f5df23820e291f4ab8
      https://github.com/zopefoundation/Zope/commit/630ad5ccd4b50bf4cac4c4f5df23820e291f4ab8
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-08-07 (Wed, 07 Aug 2019)

  Changed paths:
    M versions.cfg

  Log Message:
  -----------
  Add version pins needed by bin/buildout on Python 2.