bucket notifications - get notif should clone result before altering it (dfsbugs 1286) (#8657)

Signed-off-by: Amit Prinz Setter <alphaprinz@gmail.com>

Author: alphaprinz

src/endpoint/s3/ops/s3_get_bucket_notification.js

@@ -1,22 +1,26 @@
 /* Copyright (C) 2016 NooBaa */
 'use strict';
 
+const _ = require('lodash');
+
 /**
  * http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGETnotification.html
  */
 async function get_bucket_notification(req) {
 
-    const result = await req.object_sdk.get_bucket_notification({
+    let result = await req.object_sdk.get_bucket_notification({
         bucket_name: req.params.bucket,
     });
 
+    result = _.cloneDeep(result);
+
     //adapt to aws cli structure
     if (result && result.length > 0) {
         for (const conf of result) {
             conf.Event = conf.event;
             conf.Topic = conf.topic;
             conf.Id = conf.id;
-            delete conf.vent;
+            delete conf.event;
             delete conf.topic;
             delete conf.id;
         }