ISSUE-345: test fix

Author: tatevikg1

tests/Integration/Controller/ListControllerTest.php

@@ -254,6 +254,7 @@ public function testGetListMembersWithCurrentSessionKeyForExistingListWithSubscr
                             'description' => '',
                             'creation_date' => '2016-06-22T15:01:17+00:00',
                             'public' => true,
+                            'subscription_date' => '2016-07-22T15:01:17+00:00',
                         ],
                     ],
                 ], [
@@ -273,13 +274,15 @@ public function testGetListMembersWithCurrentSessionKeyForExistingListWithSubscr
                             'description' => '',
                             'creation_date' => '2016-06-22T15:01:17+00:00',
                             'public' => true,
+                            'subscription_date' => '2016-08-22T15:01:17+00:00',
                         ],
                         [
                             'id' => 1,
                             'name' => 'News',
                             'description' => 'News (and some fun stuff)',
                             'creation_date' => '2016-06-22T15:01:17+00:00',
                             'public' => true,
+                            'subscription_date' => '2016-09-22T15:01:17+00:00',
                         ],
                     ],
                 ],