Add check for cluster change after toggle

spec/features/projects/clusters_spec.rb

@@ -122,10 +122,12 @@ feature 'Clusters', :js do
         context 'with sucessfull request' do
           it 'user sees updated cluster' do
+            cluster_enabled = cluster.enabled
             page.find('.js-toggle-cluster-list').click
             wait_for_requests
+            expect(cluster.enabled).to eq(!cluster.enabled)
             expect(page).not_to have_selector('.is-checked')
           end
         end