Get rid of config/initializers/2_app.rb and define Gitlab in lib/gitlab.rb

Signed-off-by: Rémy Coutable <remy@rymai.me>

config/initializers/1_settings.rb

 require_dependency File.expand_path('../../lib/gitlab', __dir__) # Load Gitlab as soon as possible
-require_dependency File.expand_path('../../lib/settings', __dir__) # Load Settings as soon as possible
 
 # Default settings
 Settings['ldap'] ||= Settingslogic.new({})

config/initializers/2_app.rb

-require_dependency 'gitlab/popen'
-
-module Gitlab
-  def self.config
-    Settings
-  end
-
-  REVISION = Gitlab::Popen.popen(%W(#{config.git.bin_path} log --pretty=format:%h -n 1)).first.chomp.freeze
-end

lib/gitlab.rb

-require_dependency 'gitlab/git'
+require_dependency 'settings'
+require_dependency 'gitlab/popen'
 
 module Gitlab
   def self.root
     Pathname.new(File.expand_path('..', __dir__))
   end
 
+  def self.config
+    Settings
+  end
+
   COM_URL = 'https://gitlab.com'.freeze
   APP_DIRS_PATTERN = %r{^/?(app|config|ee|lib|spec|\(\w*\))}
   SUBDOMAIN_REGEX = %r{\Ahttps://[a-z0-9]+\.gitlab\.com\z}
   VERSION = File.read(root.join("VERSION")).strip.freeze
+  REVISION = Gitlab::Popen.popen(%W(#{config.git.bin_path} log --pretty=format:%h -n 1)).first.chomp.freeze
 
   def self.com?
     # Check `gl_subdomain?` as well to keep parity with gitlab.com

lib/settings.rb

 require 'settingslogic'
 
-require_dependency 'gitlab'
-
 class Settings < Settingslogic
-  source ENV.fetch('GITLAB_CONFIG') { Gitlab.root.join('config/gitlab.yml') }
+  source ENV.fetch('GITLAB_CONFIG') { Pathname.new(File.expand_path('..', __dir__)).join('config/gitlab.yml') }
   namespace ENV.fetch('GITLAB_ENV') { Rails.env }
 
   class << self

spec/fast_spec_helper.rb

 require 'bundler/setup'
 
 ENV['GITLAB_ENV'] = 'test'
-ENV['RAILS_ENV'] = 'test'
 ENV['IN_MEMORY_APPLICATION_SETTINGS'] = 'true'
 
 unless Object.respond_to?(:require_dependency)
@@ -11,9 +10,6 @@ unless Object.respond_to?(:require_dependency)
 end
 
 # Defines Gitlab and Gitlab.config which are at the center of the app
-unless defined?(Gitlab.config)
-  require_relative '../lib/settings'
-  require_relative '../config/initializers/2_app'
-end
+require_relative '../lib/gitlab' unless defined?(Gitlab.config)
 
 require_relative 'support/rspec'