Title: #128: Fix group renaming issue when "id_provider = ldap" is set
So hopefully we can finally close this PR after almost a year because there is also an
integration test here: https://github.com/jhrozek/sssd/tree/group_rename
I submitted two CI runs, one with your patch in the tree (that run should succeed) and one
without your patches (to make sure the tests fail). I will report back when the tests
finish, but since I'm about to finish my today's "shift", this might
happen in the evening.
See the full comment at https://github.com/SSSD/sssd/pull/128#issuecomment-332160281