docker/libcontainer — pull request #200 by vmarmol (2014-09-23 23:48:34+00:00)
Title: Using cgroup Parent instead of Slice in systemd.

We originally exposed Slice. Now that we understand systemd's handling
of cgroups, it seems more appropriate to use Parent.

Fixes #198.

Docker-DCO-1.1-Signed-off-by: Victor Marmol (github: vmarmol)