WIP: Networking support

[aanand]

A whole bunch of new Client methods which bind to the experimental networking API (here's an overview of the functionality it offers).

[aanand]

This is ready for more eyes.

The networking API doesn't appear to be present in Docker master (which is strange - @mavenugo, @dave-tucker, is that expected? When should it land?), so to test it you'll need to install experimental Docker. If not straightforward per se, it's at least fairly doable with Docker Machine:

docker-machine create -d virtualbox experimental
docker-machine ssh experimental 'sudo sh -c "set -ex; /etc/init.d/docker stop || true; sleep 2; curl https://experimental.docker.com/builds/Linux/x86_64/docker-1.9.0-dev > /usr/local/bin/docker; /etc/init.d/docker start"'
eval "$(docker-machine env experimental)"

Then update DEFAULT_DOCKER_API_VERSION to '1.21' in docker/constants.py.

Finally, run the tests:

make unit-test
make integration-test

There are unrelated failures in both test suites, caused by the version update.

[mavenugo]

@aanand yes. the API has not landed into docker proper yet. It is still under experimental. We are waiting on a few fixes to be merged before moving the API/UX out of experimental.

[shin-]

use self._url('/networks/{0}', resource_id=net_id) instead to avoid URL tampering

[aanand]

This is now working against the latest iteration of the networking API, as implemented in moby/moby#16645.

[shin-]

👍