automated: workload-automation: allow extra WA modules

Add support for WA_EXTENSION_PATHS variable to allow extra modules. The
modules have to be available in the system before workload-automation.sh
is executed.

Change-Id: I045e5c5095a582000676214ad838e917d79dece4
Signed-off-by: Milosz Wasilewski <milosz.wasilewski@linaro.org>
4 files changed