Title: #2330: [Backport][ipa-4-7] Delete empty keytab during client installation
This PR was opened automatically because PR #2308 was pushed to master and backport to
ipa-4-7 is required.
To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/2330/head:pr2330
git checkout pr2330