Added PORTABLE as define for debugging and reidented tests.

src/System.Management.Automation/project.json

@@ -24,7 +24,7 @@
         "netstandard1.5": {
             "imports": [ "dnxcore50" ],
             "buildOptions": {
-                "define": [ "CORECLR" ],
+                "define": [ "CORECLR", "PORTABLE" ],
                 "compile": {
                     "exclude": [
                         "cimSupport/cmdletization/xml/cmdlets-over-objects.objectModel.autogen.cs",

src/System.Management.Automation/singleshell/config/MshSnapinInfo.cs

@@ -1427,7 +1427,7 @@ namespace System.Management.Automation
                                     "SecurityMshSnapInResources,Description","SecurityMshSnapInResources,Vendor")
                             };
 
-#if !CORECLR //TODO:CORECLR - The 'Microsoft.WSMan.Management' module will be available on OneCore soon
+#if !LINUX
                             if (!Utils.IsWinPEHost())
                             {
                                 defaultMshSnapins.Add(new DefaultPSSnapInInformation("Microsoft.WSMan.Management", "Microsoft.WSMan.Management", null,