[freeipa PR#4307][opened] [ipa-4-7] Travis: Enable IPv6 support for Docker

[netoarmando]

   URL: https://github.com/freeipa/freeipa/pull/4307
Author: netoarmando
 Title: #4307: [ipa-4-7] Travis: Enable IPv6 support for Docker
Action: opened

PR body:
"""
Environment variable `TRAVIS` is not accessible inside the container anymore, passing it
to the container didn't have the same effect expected by the hack this commit removes.
However, enabling IPv6, as described in
https://github.com/travis-ci/travis-ci/issues/8891, was effective to execute the tests.

Issue: https://pagure.io/freeipa/issue/8213

Signed-off-by: Armando Neto <abiagion(a)redhat.com&gt;
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/4307/head:pr4307
git checkout pr4307

[freeipa PR#4307][closed] [ipa-4-7] Travis: Enable IPv6 support for Docker

[flo-renaud]

   URL: https://github.com/freeipa/freeipa/pull/4307
Author: netoarmando
 Title: #4307: [ipa-4-7] Travis: Enable IPv6 support for Docker
Action: closed

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/4307/head:pr4307
git checkout pr4307