int/athena: seems like cleanup doesn't happen

[milanaleksic]

In integration testing of Athena warehouse I have noticed we have rather large number of databases on our test cluster.

Perfect fix

Perfect solution would probably to figure out why this happens and try to avoid it.

Alternative: cleanup

We should probably clean this up with manual actions, but since we recently had similar issue with Redshift maybe we should tackle this differently. Some options:

1. cron workflow that removes all databases that end up being used across our INT testing setup; OR
2. clean up all databases older than X (for this we should probably add epoch time as suffix so we can reason about it)