This is the first of two steps to break the archive package's dependence on utils so that archive may be moved into pkg. Also, the `Go()` function is small, concise, and not specific to the docker internals, so it is a good candidate for pkg. Signed-off-by: Rafe Colton <rafael.colton@gmail.com> Upstream-commit: b845a62149d5f4990462ac6c9167c5cfaa0e66cb Component: engine