Updates to Core.Configuration Models to use DefaultValue attribute to allow auto generated JSONSchema to give a default value in schema

src/Umbraco.Core/Configuration/Models/KeepAliveSettings.cs

@@ -1,8 +1,7 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
-using Umbraco.Cms.Core.Hosting;
+using System.ComponentModel;
 
 namespace Umbraco.Cms.Core.Configuration.Models
 {
@@ -12,10 +11,13 @@ namespace Umbraco.Cms.Core.Configuration.Models
     [UmbracoOptions(Constants.Configuration.ConfigKeepAlive)]
     public class KeepAliveSettings
     {
+        internal const bool StaticDisableKeepAliveTask = false;
+
         /// <summary>
         /// Gets or sets a value indicating whether the keep alive task is disabled.
         /// </summary>
-        public bool DisableKeepAliveTask { get; set; } = false;
+        [DefaultValue(StaticDisableKeepAliveTask)]
+        public bool DisableKeepAliveTask { get; set; } = StaticDisableKeepAliveTask;
 
         /// <summary>
         /// Gets a value for the keep alive ping URL.