[freeipa PR#5951][opened] Test semi-generic way to pull in external repo

[rcritten]

   URL: https://github.com/freeipa/freeipa/pull/5951
Author: rcritten
 Title: #5951: Test semi-generic way to pull in external repo
Action: opened

PR body:
"""
Testing in the context of https://github.com/freeipa/freeipa/pull/5932

I'm not yet sure that setup_class() is the best way to do this and IIRC DNS resolution
can be tricky but let's see what happens.
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/5951/head:pr5951
git checkout pr5951