It makes systemd integration less intrusive, notably needed for
docker machine (cf. https://github.com/docker/machine/pull/3605).
The default storage driver would now be devicemapper, until the
deb package is updated.
Signed-off-by: Bilal Amarni <bilal.amarni@gmail.com>
Upstream-commit: de078211b30e13825b596ff4b2798e0fb780551a
Component: engine