Integration tests for DiscussionRepository

Also add some TestDummy factories (needs more work)

tests/_support/IntegrationHelper.php

@@ -0,0 +1,10 @@
+<?php
+namespace Codeception\Module;
+
+// here you can define custom actions
+// all public methods declared in helper class will be available in $I
+
+class IntegrationHelper extends \Codeception\Module
+{
+
+}