[SSSD] [sssd PR#891][synchronized] IPA: Utilize new protocol in IPA extdom plugin

[thalman]

URL: https://github.com/SSSD/sssd/pull/891
Author: thalman
 Title: #891: IPA: Utilize new protocol in IPA extdom plugin
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/891/head:pr891
git checkout pr891