cman: create and destroy lockfile on restart
    
    The lockfile was ony created and destroyed only when
    /etc/init.d/cman {stop, start} is called.
    
    This patch adds lockfile create/destroy to the other functions
    
    Resolves: rhbz#982670
    Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>