Make testing name scheme consistent (#395)

* Updating CahceHelperTests names

* Updating OrdersTests names

* Removing tests for "Include" functionality as it lives in a NuGet Package now

* Updating Integration Test anems

tests/IntegrationTests/Repositories/BasketRepositoryTests/SetQuantities.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.eShopWeb.ApplicationCore.Entities.BasketAggregate;