net: net ads gpo list machine|username shows Duplicate GPOs
Command whose output would be affected: 'net ads gpo list machine|username' command.
Presently 'net ads gpo list machine|username' shows 'Default Domain GPO' twice.
This change shows GPO associated with machine|username only once.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14011
Signed-off-by: Amit Kumar amitkuma@redhat.com