[SSSD] [sssd PR#796][synchronized] ci: enable sssd-ci for 1-16 branch

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/796
Author: pbrezina
 Title: #796: ci: enable sssd-ci for 1-16 branch
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/796/head:pr796
git checkout pr796