start: and a new argument to initialize shared data

When starting to test a new DUT, we would like to initialize the
specified shared data such that the old shared data values from
previous round would not be accidentally reused.

This patch also fixed some lint issues.

BUG=chrome-os-partner:42640
TEST=manually tested.

Change-Id: I40334a616466884608d5f277e925f39c8b81fe03
Reviewed-on: https://chromium-review.googlesource.com/285385
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Shyh-In Hwang <josephsih@chromium.org>
Tested-by: Shyh-In Hwang <josephsih@chromium.org>
1 file changed