LPS-36418 CounterLocalService concurrent increment test

ccing @jrhoun

Brian, I need QA help on this.

We already know Postgresql has some funny behavior because we set tx isolation level to serializable.

We need to run this test on all support dbs, making sure they all behave in a same way. Otherwise we will have to get rid of the serializable isolation level(I did not add that, and I don't think we need that, but need test to confirm).

If any db breaks on this test, I need a way to reproduce it on my machine, maybe a db vm? Or just a remote jdbc connection if not too slow for debugging.