silence some Puppet 3.2.1 warnings
update redis module
- Changed CentOS box' URL in Vagrantfile because the original box provided by Dropbox is no longer accessiable. Dropbox responds with a 509.
- Updated Vagrantfile to Vagrant's config version 2. Reason: The current Vagrant release 1.3.5 printed a lot of warnings while operating upon a version 1 config.
Merge pull request #9 from ogm256/master

- Changed CentOS box' URL in Vagrantfile because the original box provid...