[freeipa PR#5299][opened] [Backport][ipa-4-8] ipatests: support subordinate upn suffixes

[abbra]

   URL: https://github.com/freeipa/freeipa/pull/5299
Author: abbra
 Title: #5299: [Backport][ipa-4-8] ipatests: support subordinate upn suffixes
Action: opened

PR body:
"""
This PR was opened automatically because PR #5254 was pushed to master and backport to
ipa-4-8 is required.
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/5299/head:pr5299
git checkout pr5299