Add proper versioning to schema

Author: Robert Holt

PSCompatibilityCollector/Microsoft.PowerShell.CrossCompatibility/Collection/CompatibilityProfileCollector.cs

@@ -76,7 +76,7 @@ public CompatibilityProfileCollector Build(SMA.PowerShell pwsh)
             }
         }
 
-        private SMA.PowerShell _pwsh;
+        private static readonly Version s_currentProfileSchemaVersion = new Version(1, 1);
 
         private readonly PowerShellDataCollector _pwshDataCollector;
 
@@ -86,6 +86,8 @@ public CompatibilityProfileCollector Build(SMA.PowerShell pwsh)
 
         private readonly Func<ApplicationInfo, Version> _getApplicationVersion;
 
+        private SMA.PowerShell _pwsh;
+
         private CompatibilityProfileCollector(
             SMA.PowerShell pwsh,
             PlatformInformationCollector platformInfoCollector,
@@ -126,6 +128,7 @@ public CompatibilityProfileData GetCompatibilityData(string platformId, out IEnu
 
             return new CompatibilityProfileData()
             {
+                ProfileSchemaVersion = s_currentProfileSchemaVersion,
                 Id = platformId ?? PlatformNaming.GetPlatformName(platformData),
                 Platform = platformData,
                 Runtime = GetRuntimeData(out errors)

PSCompatibilityCollector/Microsoft.PowerShell.CrossCompatibility/Utility/JsonProfileSerializer.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Text;
@@ -197,7 +198,14 @@ public CompatibilityProfileData Deserialize(FileInfo file)
         /// <returns>The hydrated compatibility profile as a .NET object.</returns>
         public CompatibilityProfileData Deserialize(TextReader textReader)
         {
-            return _serializer.Deserialize<CompatibilityProfileData>(new JsonTextReader(textReader));
+            CompatibilityProfileData profile = _serializer.Deserialize<CompatibilityProfileData>(new JsonTextReader(textReader));
+
+            if (profile.ProfileSchemaVersion == null)
+            {
+                profile.ProfileSchemaVersion = new Version(1, 0);
+            }
+
+            return profile;
         }
 
         private static IList<JsonConverter> GetFormatConverters()