Neutron

This PR is depend on the PR #9 on jiocloud-contrail.

* Increased memory for contrail vagrant node
* Added contrail controller
* Added neutron





Just to record it here, too.. I explained on IRC that this isn't another version of python. Just another version of python-six, which is a compatibility library that makes it easier for developers to write things that work with both python 2 and python 3.

In other words, not a big deal.