Fixed issue for wrong creation_time for non-nsfs buckets while listin…

…g objects.

Signed-off-by: Aayush Chouhan <achouhan@redhat.com>

src/api/bucket_api.js

@@ -399,6 +399,9 @@ module.exports = {
                             required: ['name'],
                             properties: {
                                 name: { $ref: 'common_api#/definitions/bucket_name' },
+                                creation_date: {
+                                    idate: true
+                                },
                             }
                         }
                     }

src/server/system_services/bucket_server.js

@@ -985,7 +985,10 @@ async function list_buckets(req) {
     );
     return {
         buckets: _.map(buckets_by_name, function(bucket) {
-            return _.pick(bucket, 'name');
+            return {
+                name: bucket.name,
+                creation_date: bucket._id.getTimestamp().getTime()
+            };
         })
     };
 }