pkg/deploy/gce/http: web wizard to deploy on Google Cloud

http://camlistore.org/issue/531

Change-Id: I47900eb7b82b7775ec1d26b1d6796e5701ee672d
holy shitsnacks

Change-Id: I6f689bd23d953e66ee9a6af0b26c6e82eff655b2
noice