S3 reduced redundancy and cache control

* S3 Cache-Control header
* S3 reduced redundancy storage in order to lower costs

http://aws.amazon.com/about-aws/whats-new/2010/05/19/announcing-amazon-s3-reduced-redundancy-storage/
http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html#RESTObjectPUT-requests-request-parameters