[Checkins] [zopefoundation/Products.SiteErrorLog] 6add37: - fix Travis config

[Jens Vagelpohl]

  Branch: refs/heads/fix-isort
  Home:   https://github.com/zopefoundation/Products.SiteErrorLog
  Commit: 6add375e44e6bba4431ea064d5f4c44d13181156
      https://github.com/zopefoundation/Products.SiteErrorLog/commit/6add375e44e6bba4431ea064d5f4c44d13181156
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2020-07-16 (Thu, 16 Jul 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  - fix Travis config