travis-ci/travis-cookbooks — pull request #180 by roidrage (2013-05-07 20:12:53+00:00)
Title: Enable MongoDB auth by default

This only affects connections from remote hosts. Connections from localhost are not required to authenticate.

According to @TylerBrock, it should be safe to enable this by default as it allows to test authentication, but doesn't require any changes to projects and apps that are currently running without authentication.