Empty uncommitted statements

# Dependencies
This is branched off https://github.com/FoundationDB/sql-layer-client-tools/pull/84 so that needs to go in before you'll even want to look at this.
The new option that this uses is in: https://github.com/FoundationDB/sql-layer/pull/1417
I saw that in one of the before blocks, but I don't think it really adds much in this instance since I can wrap a try catch and clean the file up during the test, rather than letting them build up for the 20 or so calls to this method.