Add Support for Ubuntu

[drts01]

This is my initial stab at adding Ubuntu support. I was able to successful build a Xenial docker image with the manifest provided.

__ summary __
  flake8: commands succeeded
  unit: commands succeeded
  integration: commands succeeded
  docs: commands succeeded
  congratulations :)

I opened issue #410 for general discussing around adding support for other Debian based distros.

(will squash if desired)