Title: #3291: [Backport][ipa-4-7] nfs.py: fix user creation
This PR was opened automatically because PR #3274 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/3291/head:pr3291
git checkout pr3291