Set us-west-2 (Oregon) as default region for UC Berkeley, closes Issue #7

To take advantage of the AWS direct connect, change default region to the [AWS Direct Connection Location](http://aws.amazon.com/directconnect/faqs/#G7) connected to the campus network.

AWS Direct Connect Location|AWS Region
---------------------------|----------
Equinix SE2 & SE3|US West (Oregon)

More info:
http://aws.amazon.com/directconnect/faqs/
distribute credentials via protected S3 bucket only available after password change at first login