Ticket 47473 - setup-ds.pl doesn't lookup the "root" group correctly
Bug Description: Silent install will fail, if you set the "SuiteSpotUserID"
to root, but do not set "SuiteSpotGroup".
Fix Description: The root gid is zero, and this incorrectly triggered an
error that cancelled the install. Fix is to check if the
user info is set, instead of checking the group id value;
https://fedorahosted.org/389/ticket/47473
Reviewed by: richm(Thanks!)
(cherry picked from commit 8aa9e8c38186c8447e6825839ef2f784f3ad9815)