Adding in erroneously removed args

The 'kill' argument was accidentially removed
as part of patch
53b8e27da996f2efdcc4eb687f3bda0791a8d947

Signed-off-by: Joe Buck <jbbuck@gmail.com>
Merge pull request #84 from ceph/wip-buck-daemon-helper

Reviewed-by: Josh Durgin <josh.durgin@inktank.com>