We haven't required lxc and aufs for years now...

Well, maybe not years, but internet years...

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: timthelion)
Merge pull request #6858 from timthelion/patch-6

We haven't required lxc and aufs for years now...