Fix tmdb tests

Need to resolve the mapper now that we don't blindly add images

src/NzbDrone.Core.Test/MetadataSource/SkyHook/SkyHookProxyFixture.cs

@@ -1,5 +1,6 @@
 using FluentAssertions;
 using NUnit.Framework;
+using NzbDrone.Core.MetadataSource;
 using NzbDrone.Core.MetadataSource.SkyHook;
 using NzbDrone.Core.Movies;
 using NzbDrone.Core.Test.Framework;
@@ -15,6 +16,7 @@ namespace NzbDrone.Core.Test.MetadataSource.SkyHook
         public void Setup()
         {
             UseRealHttp();
+            Mocker.SetConstant<ITmdbConfigService>(Mocker.Resolve<TmdbConfigService>());
         }
 
         [TestCase(11, "Star Wars")]