a57a3ec _check_install_source: handle change to addrepo logging in F37

Authored and Committed by adamwill 2 years ago
    _check_install_source: handle change to addrepo logging in F37
    
    Logging of additional repo setup changed recently in F37, we
    need to handle the new message format here.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>