Current implementation is hard to reason about because of trying to mix
unix/tcp server implementations, even though they are quite different.
This cleans that up.
Also makes it possible to create and manage a new API server easily,
e.g. for adding an introspection socket to a container.
Built in such a way as to allow a non-HTTP server to work as well, such
as libchan.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: dacae746b70f50dd1f3ea9d40834386b96b6c200
Component: engine
bbc96d66b4