[v2] Weekly OpenApiDocs Manual Refresh (#1975)

* Refresh APIs

* Bump SDK version

* Add generated MgCommandMetadata.json

Author: peombwa

config/ModuleMetadata.json

@@ -26,15 +26,15 @@
   ],
   "versions": {
     "authentication": {
-      "prerelease": "preview8",
+      "prerelease": "preview9",
       "version": "2.0.0"
     },
     "beta": {
-      "prerelease": "preview8",
+      "prerelease": "preview9",
       "version": "2.0.0"
     },
     "v1.0": {
-      "prerelease": "preview8",
+      "prerelease": "preview9",
       "version": "2.0.0"
     }
   }

openApiDocs/beta/Applications.yml

@@ -280,7 +280,7 @@ components:
               nullable: true
             notificationUrl:
               type: string
-              description: Required. The URL of the endpoint that receives the change notifications. This URL must make use of the HTTPS protocol.
+              description: Required. The URL of the endpoint that receives the change notifications. This URL must make use of the HTTPS protocol. Any query string parameter included in the notificationUrl property will be included in the HTTP POST request when Microsoft Graph sends the change notifications.
             notificationUrlAppId:
               type: string
               description: Optional. The app ID that the subscription service can use to generate the validation token. This allows the client to validate the authenticity of the notification received.