automated: workload-automation: allow for custom output path

In order to make result postprocessing possible in the LAVA job, WA
results can now be saved in the custom path that can be set as parameter

Change-Id: Id17a6dae15b9e5569270bd06722b9aa5d3a7b636
Signed-off-by: Milosz Wasilewski <milosz.wasilewski@linaro.org>
2 files changed