[autotest] Add 10 min timeout when re-program EC/BIOS

Without the timeout, firmware provision will stuck long time before test/
special task timeout kicks in.

retry.timeout does not work with process started in code. refer to CL 288366

BUG=None
TEST=local test

Change-Id: Icefcb8841ff61a300087cb1c012f68ad96c4cb0a
Reviewed-on: https://chromium-review.googlesource.com/288974
Trybot-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Wai-Hong Tam <waihong@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
2 files changed