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

Label: +Changes requested