New methods for Sqoop import with SQL query

Well, it's just an interface, it doesn't actually encapsulate any behaviour. So it doesn't have any concrete benefits in terms of providing some logic for you.

But you've essentially used that interface here modulo some minor changes to encapsulate the common code between tests. So I thought, seeing as you're writing specs2 tests, maybe using the standard specs2 interface for this work would be nice.

But it's up to you, not a big deal either way.