init: misc changes
    
    - use requires for sanlk-resetd because it's probably better
    - remove syslog from sanlk-resetd because it seems systemd
      doesn't like that any more
    - remove controlgroup from sanlock and wdmd services files
      because systemd doesn't seem to like that any more
    
    Signed-off-by: David Teigland <teigland@redhat.com>