koji / staging: prep for koji 1.35 in staging
    
    Only staging for now, will need to remove the if statements when we move
    to prod. Drop some no longer used kojira config and add some that moved
    to the hub.
    
    See https://docs.pagure.org/koji/migrations/migrating_to_1.35/
    
    Signed-off-by: Kevin Fenzi <kevin@scrye.com>