[PATCH 1/2] dts: include smoke tests in tests config

[Luca Vizzarro]

Hi Patrick,

this looks good, easy and quick fix. I am afraid that you can't append 
to an `Iterable` type though. I've also confirmed this with mypy:

   Unsupported left operand type for + ("Iterable[TestSuiteConfig]")

I guess the easiest fix is to just change the argument type to `list` 
from `Iterable`.

Best,
Luca