[SSSD] [sssd PR#5404][opened] nss: check if groups are filtered during initgroups

[sumit-bose]

   URL: https://github.com/SSSD/sssd/pull/5404
Author: sumit-bose
 Title: #5404: nss: check if groups are filtered during initgroups
Action: opened

PR body:
"""
If groups are filtered, i.e. SSSD should not handle them, they should
not appear in the group list returned by an initgroups request.

Resolves: https://github.com/SSSD/sssd/issues/5403
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/5404/head:pr5404
git checkout pr5404