Add feature switch for woo commerce list sync

[MAILPOET-1732]

tests/integration/Cron/DaemonTest.php

@@ -16,6 +16,7 @@ class DaemonTest extends \MailPoetTest {
   public function _before() {
     parent::_before();
     $this->settings = new SettingsController();
+    $this->settings->set('woo_commerce_list_sync_enabled', 1);
   }
 
   function testItCanExecuteWorkers() {