Redirect HTTP dependency API requests to bundler.rubygems.org.

It's already doing this for HTTPS, and it seems like this should be consistent.

Redirecting seems like a better option than reverse proxying for dependency API requests, to avoid tying up nginx connections.
ensure /etc/cloud exists
cleanup cap scripts
add AU and NZ mirrors to https config
cleanup chef metadata
general cleanup, lint testing
Merge pull request #134 from TimMoore/patch-1

Redirect HTTP dependency API requests to bundler.rubygems.org.
add basic Papertrail logging