Title: #1589: [Backport][ipa-4-6] User must not be able to delete his last active otp
This PR was opened automatically because PR #1582 was pushed to master and backport to
ipa-4-6 is required.
To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/1589/head:pr1589
git checkout pr1589