Optimizations

Hi Jacques,

some optimizations for your Vagrant config:
* Replaced the `delete.me` with a `.gitignore` which is the only file added to the git. All other files in the `htdocs` directory are automatically excluded.
* Added a better hostname ending with `.dev` to prevent some problems with dns lookup on a Mac
* Added a puppet manifest for PHPUnit. The binary is automatically installed.
* Added a second database for unit tests via EcomDev_PHPUnit. So that you don't have to create it manually.