Title: #2266: Fix the uninstall test, execute in the nightly runs
I'm not sure what changed that caused the test to start failing. We didn't notice
until now because the test wasn't executed in the nightlies.
Rather than only trying to stop dirsrv when it was running just brute-force always try to
shut it down.
To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/2266/head:pr2266
git checkout pr2266