Fixes #7525 - don't fail on structured facts

> It's not a class method, so maybe ```FactImporter.new(nil, facts)``` is what you want to do, if tests are :green_heart: after that, I'll merge!

Oh I did not mean to add this one, I thought this bit was deleted. I
have removed this as the method is fully covered in the puppet importer
already.

-- 
Later,
 Lukas #lzap Zapletal