Ordering built-in and custom data providers (#414)

So custom data providers could be executed after built-in data providers. This will allow not only create additional resources, but also update resources (already) generated by Allure standard data providers.

I didn't want to add explicit ordering in data providers. Data provider dependency management is also an overkill IMO. So, there are minimal changes to add ordering required.

Thoughts?
Whats mean "default"?) In general its "process-testpack" phase.