Database unit testing capabilities

[benedeki]

Background

When using fa-db the database functions that are called are the key part of the whole concept. But it might be harder how to test them.

Goal

Add the ability to unit test the database functions from within a Scala application.

Expected Task List

1. Deploy the DB
2. Run in rollback mode

[lsulak]

Done in github.com/AbsaOSS/balta and see how it can be used in https://github.com/AbsaOSS/atum-service/tree/master/database/src/test