require is quite slow in Ruby and doing requires for things you've already required is also slow. We've used this simple hack in Chef to speed up our requires. In the omnibus installs we patch how rubygems works to make this somewhat pointless, but this will help non-omnibus installs

Signed-off-by: Tim Smith <tsmith@chef.io>

Autocorrect with the latest chefstyle

Signed-off-by: Tim Smith <tsmith@chef.io>

Signed-off-by: Tim Smith <tsmith@chef.io>

Signed-off-by: Thom May <thom@may.lt>

- Implement ActorKeyEndpoint, ActorKeysEndpoint.
- Implement user, client keys in `ActorEndpoint#delete`, `#put`.

- RestBase
  - Fix RestErrorResponse exceptions to report actual `rest_path`
    instead associated with the failed data store operation instead of
    `request.rest_path`.
  - Move `json_response`, `already_json_response` args `request_version`
    and `response_version` into options hash; add docs.

- DataError, RestErrorResponse: Pass useful message text to `super`.

- RestRouter: Clean up logging
  - Print request methods, paths and bodies more readably for log_level >= INFO.
  - Pretty-print RestRequest objects (only printed when log_level == DEBUG).

- Server: Change default log_level to `:warn` (to enable logging cleanup above).

- `Rakefile`, `spec/run_oc_pedant.rb`
  - Consume RSpec, Pedant options from `ENV['RSPEC_OPTS']`, `ENV['PEDANT_OPTS']` (see `rake -D`).
  - Consume `ENV['LOG_LEVEL'` (see `rake -D`).
  - Clean up ChefZero::Server default opts and move duplicated logic to `start_chef_server` method.