Update labeller routes. (#15117)

.github/labeler.yml

-#area-azure:
+# "AzureAD" is an area-security area.
+area-azure:
+  - src/Azure/AzureAppServices.HostingStartup/**/*
+  - src/Azure/AzureAppServicesIntegration/**/*
 
 area-blazor:
   - src/Components/**/*
 
-#area-commandlinetools:
+area-commandlinetools:
+  - src/Tools/**/*
 
 area-dataprotection:
   - src/DataProtection/**/*
@@ -15,6 +19,7 @@ area-dataprotection:
 area-hosting:
   - src/Hosting/**/*
   - src/SiteExtensions/**/*
+  - src/DefaultBuilder/**/*
 
 #area-httpclientfactory:
 
@@ -39,18 +44,23 @@ area-mvc:
   - src/Mvc/**/*
   - src/MusicStore/**/*
   
-#area-platform:
+area-platform:
+  - src/Framework/**/*
 
 area-security:
   - src/Security/**/*
+  - src/Azure/AzureAD/**/*
 
+# For now, "Http" is under servers. We might adjust that later.
 area-servers:
   - src/Servers/**/*
+  - src/Http/**/*
 
 area-signalr:
   - src/SignalR/**/*
 
-#area-websockets:
+area-websockets:
+  - src/Middleware/WebSockets/**/*
 
 api-suggestion:
   - src/**/ref/**/*