a7ec8ad container build test: configure for dnf5

Authored and Committed by adamwill 3 months ago
    container build test: configure for dnf5
    
    When testing the update that implements the dnf5 switchover, we
    need to patch the kiwi config on the fly for dnf5.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>