Merge pull request #15482 from jaredpar/fix-json

Add fixed version of Newtonsoft.Json

build/ToolsetPackages/closed.project.json

 {
     "dependencies": {
         "Microsoft.Diagnostics.Tracing.TraceEvent": "1.0.35",
+        "Newtonsoft.Json": "9.0.1",
         "System.IdentityModel.Tokens.Jwt": "5.0.0",
         "System.IO.Compression.ZipFile": "4.0.1"
     },

build/config/RepoUtilData.json

@@ -2,6 +2,7 @@
     "fixedPackages": {
         "Microsoft.VisualStudio.Language.Intellisense": "14.3.25407",
         "Microsoft.VSSDK.BuildTools": [ "14.3.25420", "15.0.25907-RC2" ],
+        "Newtonsoft.Json": [ "9.0.1" ],
         "System.Reflection.Metadata": "1.0.21",
         "System.Collections.Immutable": "1.1.36",
         "Microsoft.VisualStudio.Editor": [ "14.3.25407", "15.0.25726-Preview5" ],