Set for fedora-modular 1.8.
    
    We hit a traceback here https://kojipkgs.fedoraproject.org/compose/26/Fedora-Modular-26-20170719.0/logs/global/traceback.global.log
    
    We're going to try again with the latest pungi to see if it fixes the
    gather_method problems.
    
    Signed-off-by: Ralph Bean <rbean@redhat.com>