Title: #5501: [Backport][ipa-4-8] Fix cert_request for KDC cert
This PR was opened automatically because PR #5496 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/5501/head:pr5501
git checkout pr5501