* EZP-32156: Advisory fixes for 'user/sessions' endpoint

* EZP-32156: Adjust script execution delay

* EZP-32156: Parametrized usleep call

* Added comment explaining constructor params

Co-authored-by: Gunnstein Lye <gunnstein.lye@ez.no>

* EZP-32156: Introduced sleep constants

* EZP-32156: Initialize boundary times in constructor

Co-authored-by: Bartek Wajda <bartlomiej.wajda@ibexa.co>
Co-authored-by: Gunnstein Lye <gunnstein.lye@ez.no>
(cherry picked from commit 4a538dbfd28fecd404f11fa0816b69a5a9e93a16)