add rootpw --lock to all livekickstarts
    
    for rhbz#1392468 I was told that what we had should never have worked.
    A bug in anaconda was fixed causing the need for the user or root
    spokes to have to be dealt with. locking the root account should
    satisfy everything.
    
    Signed-off-by: Dennis Gilmore <dennis@ausil.us>