Closes#206
Much like we have support for supplying DNS configurations and writing
out /etc/resolv.conf, this adds a way to write out /etc/hosts for a
given container.
This allows the user the ability to raise an EOF for the containers
stdin. Today there's no way to close stdin so something as simple as
"cat" and relying on EOF to move the process forward doesn't work
This is something I forgot to update ages ago. The field names, while
they do make sense, were different than the constructor names that
eventually set the fields themselves. This is kind of awkward, and I'd
much rather fix this now while it's much easier.
We'll need to update `container` after this
Signed-off-by: Danny Canter <danny_canter@apple.com>