tests: Fix mocking of sleep calls with tenacity 8.4.2
Latest tenacity release adds some internal changes that broke the mocking of sleep calls in tests.
Fix it by directly mocking time.sleep (was not working previously).
Staging instance, all changes can be removed at any time
Latest tenacity release adds some internal changes that broke the mocking of sleep calls in tests.
Fix it by directly mocking time.sleep (was not working previously).