Code review comment for lp://staging/~cjwatson/storm/restore-mysql

https://paste.ubuntu.com/p/CpVtdGRZgm/ is a diff of the three "new" (restored) files in this branch against the revision immediately before their previous removal, which may make them easier to review. As you can see, there are a few changes for Python 3 support, test directory reorganization, and to support automatic test database provisioning, but they're relatively short.