[#52117673] Add cleanup task
[#52117673] reduced the number of build to iterate through
[#52117673]drop databases only if they exist
[#52117673] Added tests to the cleanup
[#52117673] Fix broken tests
switch callback order
Merge pull request #53 from HouseTrip/tech-d/remove-zombie-dbs-52117673

Tech - Doctors: Delete zombie dbs [#52117673]