Update Greenwave Rawhide gating policy for Cloud UEFI testing
    
    The Rawhide gating policy (not yet actually used for gating)
    needs to be updated now we're running Cloud tests on UEFI not
    BIOS. This test was coming up 'missing' every day.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>