Title: #402: LDAP: Allow autogenerating user-private groups
btw some downstream tests failed and some didn't pick up the correct sssd version and
I'm not sure why. I will investigate further. But please don't add the accepted
label or push the patches before the test issues are solved.
See the full comment at https://github.com/SSSD/sssd/pull/402#issuecomment-337340994