src/tests/intg/test_netgroup.py is licensed under GPLv3+
    
    $ git log --format='%an <%ae>' src/tests/intg/test_netgroup.py | sort | uniq
    Fabiano Fidêncio <fidencio@redhat.com>
    Jakub Hrozek <jhrozek@redhat.com>
    Lukas Slebodnik <lslebodn@redhat.com>
    Petr Cech <pcech@redhat.com>
    Sumit Bose <sbose@redhat.com>
    
    All people who touched the file are Red Hat employees and the file is
    original work.
    
    Reviewed-by: Michal Židek <mzidek@redhat.com>