CI: Fix bundler deps

![](http://upload.wikimedia.org/wikipedia/en/f/f8/A.perfect.circle.mer.de.noms.jpg)
CircleCI now runs the full suite of tests including integration tests by way of EC2.

### Testing

Go to https://circleci.com/gh/LiveSafe/lvsf-opsworks-php-cookbook/21 and see that full suite is run and passes