Add AuthenticationDisplayName to HttpSys (#21410)

* Add AuthenticationDisplayName to HttpSys

* update reference assembly

* Update Microsoft.AspNetCore.Server.HttpSys.netcoreapp.cs

* Trigger build

Author: Kahbazi

src/Servers/HttpSys/ref/Microsoft.AspNetCore.Server.HttpSys.netcoreapp.cs

@@ -15,6 +15,7 @@ public sealed partial class AuthenticationManager
     {
         internal AuthenticationManager() { }
         public bool AllowAnonymous { get { throw null; } set { } }
+        public string AuthenticationDisplayName { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public bool AutomaticAuthentication { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public Microsoft.AspNetCore.Server.HttpSys.AuthenticationSchemes Schemes { get { throw null; } set { } }
     }

src/Servers/HttpSys/src/AuthenticationManager.cs

@@ -61,6 +61,11 @@ public bool AllowAnonymous
         /// </summary>
         public bool AutomaticAuthentication { get; set; } = true;
 
+        /// <summary> 
+        /// Sets the display name shown to users on login pages. The default is null.
+        /// </summary> 
+        public string AuthenticationDisplayName { get; set; }
+
         internal void SetUrlGroupSecurity(UrlGroup urlGroup)
         {
             Debug.Assert(_urlGroup == null, "SetUrlGroupSecurity called more than once.");

src/Servers/HttpSys/src/MessagePump.cs

@@ -48,7 +48,7 @@ public MessagePump(IOptions<HttpSysOptions> options, ILoggerFactory loggerFactor
 
             if (_options.Authentication.Schemes != AuthenticationSchemes.None)
             {
-                authentication.AddScheme(new AuthenticationScheme(HttpSysDefaults.AuthenticationScheme, displayName: null, handlerType: typeof(AuthenticationHandler)));
+                authentication.AddScheme(new AuthenticationScheme(HttpSysDefaults.AuthenticationScheme, displayName: _options.Authentication.AuthenticationDisplayName, handlerType: typeof(AuthenticationHandler)));
             }
 
             Features = new FeatureCollection();