When running the test script to capture and replay it is helpful to
know the locations of the executables that are run to make it simpler
to locate them for debugging.

Bug: None
Change-Id: Ia43bd9863e94058515d9023981863ad6c711285e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2850640
Commit-Queue: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>