[freeipa PR#1785][opened] Travis - use F28 for testing

[stlaz]

   URL: https://github.com/freeipa/freeipa/pull/1785
Author: stlaz
 Title: #1785: Travis - use F28 for testing
Action: opened

PR body:
"""
python2 pylint fails on Fedora 28 with errors about relative imports from `ipapplatform`
that seem to be false-positives. Use only python3 pylint for Travis.

The Fedora 28 test-runner container in this commit is only to show that the tests pass,
I'll update the Fedora 28 container in DockerHub FreeIPA repo once we agree on this
PR.
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/1785/head:pr1785
git checkout pr1785

[freeipa PR#1785][closed] Travis - use F28 for testing

[stlaz]

   URL: https://github.com/freeipa/freeipa/pull/1785
Author: stlaz
 Title: #1785: Travis - use F28 for testing
Action: closed

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/1785/head:pr1785
git checkout pr1785