Updated openstack/openstack
Project: openstack/ceilometer  1e931bad7a6994160bc243cbc0f72a0841a0bc60
null
tests: kill all started processes on exit

Just killing MongoDB is not enough, we also need to kill processes such
as the cat ones used to read the fifo.

Change-Id: I3fd99e333e69625e3872e24b9337cad17d46d737