Add a workaround for a Bodhi bug that's causing problems
    
    We're not downloading all the packages from updates that contain
    more than one builds ATM, which makes the test invalid and has
    caused some false fails (and may even have caused false passes,
    though I can't tell yet). Install a fixed Bodhi as a workaround
    for this.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>