Minor fix to project file, generated by VS2017

Services.Test/Services.Test.csproj

@@ -13,4 +13,7 @@
   <ItemGroup>
     <ProjectReference Include="..\Services\Services.csproj" />
   </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
+  </ItemGroup>
 </Project>