Kill opscode-test and replace with simple chef-server-bootstrap.

The repo `opscode-test` has turned into a minefield of unused code and deprecated ruby projects.

The aspect `opscode-test` that is used is bootstrapping the initial superuser (solving the chicken and egg problem). Even this is mired in dependencies on old ruby repos that we want to deprecate but still depends on this code (mixlib-authentication, mixlib-authorization, opscode-billing, and opscode-shared to name a few).

This pulls in the refactored [chef-server-bootstrap](https://github.com/tylercloke/chef-server-bootstrap) repo that pulls out all of the above dependencies and just has a simple script for bootstrapping the superuser and global containers, killing all the above dependencies. Also review that repo just linked (its a pretty small repo). Will transfer ownership to Chef if we decide to merge this work.

[New Build](http://wilson.ci.opscode.us/job/chef-server-12-trigger-ad_hoc/220/downstreambuildview/)

### Relevant work

https://github.com/tylercloke/chef-server-bootstrap

##### Deprecation Notes

+ https://github.com/opscode/opscode-test/pull/8
+ https://github.com/opscode/opscode-billing/pull/1
+ https://github.com/opscode/couchrest/pull/1
+ https://github.com/opscode/opscode-shared/pull/6