Add a RunCommandStatus call
Add a RunCommandStatus call

In LXD, we want to get the status code of the process that was run, not just
whether or not it was nonzero.

Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>

anupcshan/go-lxc,anupcshan/go-lxc,virajs/go-lxc,virajs/go-lxc