Fix test that depended on old output directory layout

(cherry picked from commit 27dc8032dd)

test/dotnet-new.Tests/AspNetNuGetConfiguration.cs

@@ -0,0 +1,17 @@
+using System.IO;
+
+namespace Microsoft.DotNet.New.Tests
+{
+    public class AspNetNuGetConfiguration
+    {
+        public static void WriteNuGetConfigWithAspNetPrivateFeeds(string path)
+        {
+            string resourceName = "dotnet-new.Tests.NuGet.tempaspnetpatch.config";
+            using (Stream input = typeof(GivenThatIWantANewAppWithSpecifiedType).Assembly.GetManifestResourceStream(resourceName))
+            using (Stream output = File.OpenWrite(path))
+            {
+                input.CopyTo(output);
+            }
+        }
+    }
+}

test/dotnet-new.Tests/GivenThatIWantANewAppWithSpecifiedType.cs

@@ -50,12 +50,7 @@ namespace Microsoft.DotNet.New.Tests
 
             if (useNuGetConfigForAspNet)
             {
-                string resourceName = "dotnet-new.Tests.NuGet.tempaspnetpatch.config";
+                AspNetNuGetConfiguration.WriteNuGetConfigWithAspNetPrivateFeeds(Path.Combine(rootPath, "NuGet.Config"));
-                using (Stream input = typeof(GivenThatIWantANewAppWithSpecifiedType).Assembly.GetManifestResourceStream(resourceName))
-                using (Stream output = File.OpenWrite(Path.Combine(rootPath, "NuGet.Config")))
-                {
-                    input.CopyTo(output);
-                }
             }
 
             if (skipSpaWebpackSteps)