add metadata to security

Author: lizgt2000

memdocs/configmgr/security/index.yml

@@ -10,11 +10,13 @@ metadata:
   ms.prod: configuration-manager
   ms.technology: configmgr-core
   ms.topic: landing-page
-  author: aczechowski
-  ms.author: aaroncz
-  manager: dougeby
+  author: Banreet
+  ms.author: banreetkaur
+  manager: apoorvseth
   ms.date: 09/23/2021
   ms.localizationpriority: high
+  ms.reviewer: mstewart,aczechowski
+  ms.collection: tier3
 
 landingContent:
   - title: Fundamentals