dotcloud/docker — pull request #6125 by crosbymichael (2014-05-30 22:10:43+00:00)
Title: Implement systemd support for freezer

These PR does a few things. It ensures that the freezer cgroup is
joined in the systemd driver. It also provides a public api for setting
the freezer state via the cgroups package.

This helps the efforts in #6061

Docker-DCO-1.1-Signed-off-by: Michael Crosby (github: crosbymichael)