[SSSD] [sssd PR#693][synchronized] SYSDB: Fall back to the MPG result of getgrgid search if the non-MPG search for override doesn't match anything

[jhrozek]

URL: https://github.com/SSSD/sssd/pull/693
Author: jhrozek
 Title: #693: SYSDB: Fall back to the MPG result of getgrgid search if the non-MPG search for override doesn't match anything
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/693/head:pr693
git checkout pr693