dbqp.py needs to have auto-cleanup for test servers

Currently, pre and post-test cleanup is the burden of the individual test cases. A user must take pains to manually delete any 'leftover' versions of the table names they wish to use. Additionally, they are supposed to clean up anything they created during the test once they are done.

In reality, this is tedious to the test writer and leaves room for error. A better solution is to try to have the test runner itself cleanup the server for each test.

We need to try this and see what kind of performance hit we take (if any).

Additionally, if this works, we should create a new bug / blueprint to remove much of the cleanup code from existing test cases.