Title: #5721: [Backport][ipa-4-9] Add new auto-private-groups option to trust id ranges
This PR was opened automatically because PR #5712 was pushed to master and backport to
ipa-4-9 is required.
To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/5721/head:pr5721
git checkout pr5721