Fixes the definition of the authn error event codes

Author: ryannewington

src/Lithnet.Laps.Web/Lithnet.Laps.Web/Internal/EventIDs.cs

@@ -26,7 +26,6 @@ internal static class EventIDs
         public const int ErrorLoadingTemplateResource = 603;
 
         public const int OidcAuthZCodeError = 700;
-        public const int OidcAuthNError = 701;
-        public const int WsFedAuthNError = 702;
+        public const int OwinAuthNError = 701;
     }
 }

src/Lithnet.Laps.Web/Lithnet.Laps.Web/Startup.cs

@@ -192,7 +192,7 @@ public void ConfigureWsFederation(IAppBuilder app)
 
         private static Task HandleAuthNFailed<TMessage, TOptions>(AuthenticationFailedNotification<TMessage, TOptions> context)
         {
-            Reporting.LogErrorEvent(EventIDs.WsFedAuthNError, LogMessages.AuthNProviderError, context.Exception);
+            Reporting.LogErrorEvent(EventIDs.OwinAuthNError, LogMessages.AuthNProviderError, context.Exception);
 
             context.HandleResponse();
             context.Response.Redirect($"/Home/AuthNError?message={HttpUtility.UrlEncode(context.Exception?.Message ?? "Unknown error")}");