Update the pungi config for the UEFI on ARMv7 changes
    
    This update adds the various pieces for the UEFI side of things
    and removes the old appliance build process including a few cleanups.
    
    It also updates the sync process and cleans up a few bits here
    while at it.
    
    Signed-off-by: Peter Robinson <pbrobinson@gmail.com>