Did you try this out?

Some time ago I've implemented the same ([here](https://github.com/mkuprionis/spoon-gradle-plugin/commit/6d8c38fe65df98bc2b35bdd7319c200bf2ebf2c9)), needed to pass a `IRemoteAndroidTestRunner.TestSize` here.

Should have made a PR, but was leaving the company, other stuff happened, you know..