[fofix-commits] [fofix/fofix] a34684: Travis: use Trusty as default

[François Magimel]

  Branch: refs/heads/master
  Home:   https://github.com/fofix/fofix
  Commit: a34684c5c01405b64711f977212f389711d774bb
      https://github.com/fofix/fofix/commit/a34684c5c01405b64711f977212f389711d774bb
  Author: François Magimel <magimel.francois at gmail.com>
  Date:   2019-07-01 (Mon, 01 Jul 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Travis: use Trusty as default

Even though Trusty is EOL, it is still useful for tests requiring OpenGL.
Ref #193