firmware_TouchMTB: add --show_spec_v2 in replay scripts

In this patch, we add a new flag --show_spec_v2 in replay scripts.
With this flag, the machine will replay the gesture files and derive
the test results using the validators specified in the touchpad
firmware test spec v2.

BUG=chromium:248120
TEST=None. Will be tested with subsequent patches.

Change-Id: I62cd0226896a8295e9b20bd5a7ff39042e1ab5f6
Reviewed-on: https://gerrit.chromium.org/gerrit/58082
Reviewed-by: Charlie Mooney <charliemooney@chromium.org>
Tested-by: Joseph Shyh-In Hwang <josephsih@chromium.org>
Commit-Queue: Joseph Shyh-In Hwang <josephsih@chromium.org>
2 files changed