Also consolidate the leftover packages under cli.
Remove pkg/mflag.
Make manpage generation work with new cobra layout.
Remove remaining mflag and fix tests after rebase with master.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
Upstream-commit: 14712f9ff0d20a3b64a60103608b8cc998909242
Component: engine
e263ef28d9