Upgrade the version of DirectoryServices used by tests (#28247)

* Upgrade the version of DirectoryServices used by OOB packages

* Stop using using global.json for native tools and instead use machine install

Author: agocke

global.json

@@ -2,10 +2,6 @@
   "tools": {
     "dotnet": "3.1.100"
   },
-  "native-tools": {
-    "cmake": "3.11.1",
-    "python": "2.7.15"
-  },
   "msbuild-sdks": {
     "Microsoft.DotNet.Arcade.Sdk": "1.0.0-beta.22114.9",
     "Microsoft.DotNet.Helix.Sdk": "2.0.0-beta.22114.9",

tests/src/Common/CoreFX/CoreFX.depproj

@@ -38,6 +38,7 @@
     <!-- Microsoft.Private.CoreFx.OOB is a meta-package that contains references to most of what we need -->
     <PackageReference Include="Microsoft.Private.CoreFx.OOB" Version="4.7.0-rtm.19564.4" />
 
+    <PackageReference Include="System.DirectoryServices.Protocols" Version="5.0.1" />
     <PackageReference Include="System.IO.Pipelines" Version="4.7.2" />
     <PackageReference Include="System.Reflection.MetadataLoadContext" Version="4.7.2" />
     <PackageReference Include="System.Net.Http.Json" Version="3.2.1" />