Merging Test.Utilties with the latest code from rel/1.0.0.

test/Microsoft.DotNet.Tools.Tests.Utilities/DotnetLegacyRuntimeIdentifiers.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 using System.Collections.Generic;
+using Microsoft.DotNet.Cli;
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.DotNet.InternalAbstractions;
 using Microsoft.DotNet.PlatformAbstractions;

test/Microsoft.DotNet.Tools.Tests.Utilities/project.json

@@ -2,7 +2,14 @@
   "version": "1.0.0-*",
   "description": "Microsoft.DotNet.Tools.Tests.Utilities Class Library",
   "buildOptions": {
-    "keyFile": "../../tools/Key.snk"
+    "keyFile": "../../tools/Key.snk",
+    "compile": {
+      "include": [
+        "**/*.cs",
+        "../../src/dotnet/DotnetFiles.cs"
+      ]
+    }
+
   },
   "dependencies": {
     "FluentAssertions": "4.0.0",