Title: #5054: [Backport][ipa-4-8] Support older servers in is_ipa_configured() call
This PR is a manual backport of PR #5027. The conflict was lack of ACME in the ipa-4-8
branch. A single change of one commit needed to be dropped.
To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/5054/head:pr5054
git checkout pr5054