[Checkins] [zopefoundation/zope.interface] 4afc5e: Print $TRAVIS_TAG in build logs

[Marius Gedminas]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zope.interface
  Commit: 4afc5ec8ac8f9e3d961a38cf03cb78bf476a6e51
      https://github.com/zopefoundation/zope.interface/commit/4afc5ec8ac8f9e3d961a38cf03cb78bf476a6e51
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2020-03-10 (Tue, 10 Mar 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Print $TRAVIS_TAG in build logs

This is intended to help us solve mysteries like
https://github.com/zopefoundation/zope.interface/issues/185#issuecomment-596994265,
where a 5.0.0.dev0 release was uploaded despite there being no git tags
pointing to the relevant commit that anyone knows about.