Add zone-pivots metadata

Author: Saisang

docfx.json

@@ -260,7 +260,8 @@
         "Certification"
       ],
       "uhfHeaderId": "azure",
-      "ms.suite": "office"
+      "ms.suite": "office",
+	  "zone_pivot_group_filename": "zone-pivots/azure-ai/zone-pivot-groups.yml"
     },
     "fileMetadata": {
       "author": {