Update test_create_and_delete_records_on_existing_zone tests

Added a wait for zone status to ensure that all designate
operations related to a specific test have completed.

Related-Prod: PRODX-37153
Change-Id: I5c9b2ac59dc856f530736a6fadaf03b25e7ca927
(cherry picked from commit 91fafbe6d183ae3967045d3da978bdf4a9ccc23d)
1 file changed