We want to test the interaction between transactions and collection drops. We should test the following cases:

1. A transaction writes to a collection on one session. On a separate session, that a drop is attempted on that collection. The collection drop should block until either the transaction commits or maxTimeMS expires. We should also test this for dropDatabase.
2. Create collections A and B. Start a transaction T by reading from a collection A. In a separate session, drop collection B. Then try to write to collection B in transaction T. Verify that this write fails, since the collection was dropped.