Fixed #U4-814 and got all possible unit tests that were not working for DynamicNode but were working for

DynamicPublishedContent working. And fixed up the DynamicPublishedContent unit tests as these weren't working at all...
but seemed to say they did on the build server. strange.

src/Umbraco.Tests/PublishedContent/DynamicPublishedContentTests.cs

@@ -1,7 +1,9 @@
 using System;
+using System.IO;
 using System.Linq;
 using NUnit.Framework;
 using Umbraco.Core;
+using Umbraco.Core.Configuration;
 using Umbraco.Core.Models;
 using Umbraco.Core.PropertyEditors;
 using Umbraco.Web;
@@ -24,6 +26,8 @@ namespace Umbraco.Tests.PublishedContent
 						typeof(YesNoPropertyEditorValueConverter)
 					});
 
+            UmbracoSettings.SettingsFilePath = Core.IO.IOHelper.MapPath(Core.IO.SystemDirectories.Config + Path.DirectorySeparatorChar, false);
+
 			//need to specify a custom callback for unit tests
 			PublishedContentHelper.GetDataTypeCallback = (docTypeAlias, propertyAlias) =>
 				{