In addition to installing and configuring the new module, this also
enables public access to the S3 API via `bucket-name.s3.kosmos.org` as
well as Web access on `bucket-name.web.s3.kosmos.org` (when enabled).
Also includes some drive-by improvements to Chef attribute naming and
usage.
Co-authored-by: Greg Karékinian <greg@karekinian.com>
The respective bucket needs to be configured with a domain alias. When a
new alias is added to the `s3_web_domains` config, a new nginx site can
then be deployed to the `nginx_proxy` hosts.
