Merge branch '3377-use-artifacts-tests-from-ee-ee' into 'master'

EE: Unify CE and EE tests in spec/controllers/projects/artifacts_controller_spec.rb

See merge request gitlab-org/gitlab-ee!3883

spec/controllers/projects/artifacts_controller_spec.rb

@@ -150,6 +150,7 @@ describe Projects::ArtifactsController do
         end
       end
 
+      ## EE specific begins
       context 'when using remote file storage' do
         before do
           stub_artifacts_object_storage
@@ -162,6 +163,7 @@ describe Projects::ArtifactsController do
           let(:archive_path) { 'https://' }
         end
       end
+      ## EE specific ends
     end
   end