Add fake controllers for url rewriter tests

actionpack/test/controller/url_rewriter_test.rb

 require 'abstract_unit'
+require 'controller/fake_controllers'
 
 ActionController::UrlRewriter
 

actionpack/test/lib/controller/fake_controllers.rb

@@ -12,6 +12,11 @@ class NewsFeedController < ActionController::Base; end
 class ElsewhereController < ActionController::Base; end
 class AddressesController < ActionController::Base; end
 class SessionsController  < ActionController::Base; end
+class FooController < ActionController::Base; end
+class CController < ActionController::Base; end
+class HiController < ActionController::Base; end
+class BraveController < ActionController::Base; end
+class ImageController < ActionController::Base; end
 
 # For speed test
 class SpeedController < ActionController::Base;  end