Put Fastly in front of every site

[preaction]

In order to simplify our stack by having all traffic go through Fastly (instead of only most), take advantage of Fastly's SSL certificates, improve our performance (fastly's purpose), and improve our logging, we should put all of our websites behind Fastly. So far our www.cpantesters.org has been doing well, so we can now expand to the rest of our sites:

• cpantesters.org (this should be added as an alias to www.cpantesters.org)
• metabase.cpantesters.org (this should be added when we migrate to the shim API: https://github.com/cpan-testers/cpantesters-api/issues/3)
• api.cpantesters.org

[preaction]

Fastly is now in front of cpantesters.org and metabase.cpantesters.org. It is not yet in front of api.cpantesters.org, but doing so will allow us to have load balancing and other fun stuff so we should definitely do that.

[preaction]

It is now in front of api.cpantesters.org. This is enough for me: www.cpantesters.org is the production webapp, api.cpantesters.org is the production API server, metabase.cpantesters.org is the backcompat metabase. These are the things that require load balancing, caching, and failover. Everything else can be, eventually, removed.