Update RuboCop Rails to 2.21 (#37248).

git-svn-id: https://svn.redmine.org/redmine/trunk@22341 e93f8b46-1217-0410-a6f0-8f06a7374b81

.rubocop.yml

@@ -146,6 +146,9 @@ Rails/EnvironmentVariableAccess:
 Rails/FilePath:
   Enabled: false
 
+Rails/FindEach:
+  Enabled: false
+
 Rails/HelperInstanceVariable:
   Enabled: false
 

.rubocop_todo.yml

@@ -566,23 +566,6 @@ Rails/Exit:
     - 'config/initializers/10-patches.rb'
     - 'config/routes.rb'
 
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: Include, AllowedMethods, AllowedPatterns.
-# Include: app/models/**/*.rb
-# AllowedMethods: order, limit, select, lock
-Rails/FindEach:
-  Exclude:
-    - 'app/models/auth_source.rb'
-    - 'app/models/group.rb'
-    - 'app/models/issue.rb'
-    - 'app/models/issue_status.rb'
-    - 'app/models/project.rb'
-    - 'app/models/query.rb'
-    - 'app/models/repository.rb'
-    - 'app/models/setting.rb'
-    - 'app/models/watcher.rb'
-    - 'app/models/wiki_page.rb'
-
 # Configuration parameters: Include.
 # Include: app/models/**/*.rb
 Rails/HasAndBelongsToMany:

Gemfile

@@ -105,7 +105,7 @@ group :test do
   # RuboCop
   gem 'rubocop', '~> 1.57.0', require: false
   gem 'rubocop-performance', '~> 1.19.0', require: false
-  gem 'rubocop-rails', '~> 2.20.2', require: false
+  gem 'rubocop-rails', '~> 2.21.2', require: false
 end
 
 local_gemfile = File.join(File.dirname(__FILE__), "Gemfile.local")