Merge branch 'sh-enable-request-store-issues' into 'master'

Enable RequestStore in IssuesController spec to prevent N+1 warnings

See merge request gitlab-org/gitlab-ee!3356

spec/controllers/boards/issues_controller_spec.rb

@@ -17,7 +17,7 @@ describe Boards::IssuesController do
     project.team << [guest, :guest]
   end
 
-  describe 'GET index' do
+  describe 'GET index', :request_store do
     let(:johndoe) { create(:user, avatar: fixture_file_upload(File.join(Rails.root, 'spec/fixtures/dk.png'))) }
 
     context 'with invalid board id' do