wlgen/workload: Keep all assets into a dedicated folder
Created by: derkling
RTApp requires a JSON description and generates log files.
Let's ensure all these assets are confined withing a dedicated folder so that when we pull stuff we are sure to not get leftovers from previous executions. This allows also to do a proper cleanup of the target once a test has completed.
Signed-off-by: Patrick Bellasi patrick.bellasi@arm.com