Remove APT dependency and MIT PGP server.

- Remove apt dep and manage the files directly.
- MIT PGP server  was going offline a lot causing problems for anyone trying to
  install a repo, so remove it and use apt-key instead.
Add additional integration tests.

- Added tests for CentOS7
- Added tests for Ubuntu 10.04 and 14.04
- Rearranged recipes to deal with the subtle differences in package names
	across ubuntus
Version bump