Add a regression test to pw(8) because the bug was discovered via using:
pw groupmod
PR: 187189
Reported by: mcdouga9@egr.msu.edu
Tested by: mcdouga9@egr.msu.edu
Patch by: Marc de la Gueronniere
The user was perperly adding the to different groups from "list" but was not
removed from the other groups it could have belong to.
While here add a regression test about this bug
PR: 185666
Reported by: sub.mesa@gmail.com
MFC after: 1 week