Title: #5603: [Backport][ipa-4-9] DNS resolvers management
This PR was opened automatically because PR #5474 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/5603/head:pr5603
git checkout pr5603