dark_resume: Disable dark resume on link for test image.

Latest code looks for the presence of dark_resume_suspend_durations
file to decide whether to enable legacy dark resume. We do not want
it to be enabled on test image as it breaks several autotests.

BUG=chromium:820503
TEST=./build_image on link an make sure legacy dark resume is not
     enabled on link for test image.

Change-Id: I8b562778001f789f5ac6c89561c24e119ac75311
Reviewed-on: https://chromium-review.googlesource.com/957719
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Todd Broch <tbroch@chromium.org>
Reviewed-by: Ravi Chandra Sadineni <ravisadineni@chromium.org>
(cherry picked from commit 989cf3f25bf80243ac98addebf42b42d0b9b67f3)
Reviewed-on: https://chromium-review.googlesource.com/972241
Reviewed-by: Kalin Stoyanov <kalin@chromium.org>
Commit-Queue: Todd Broch <tbroch@chromium.org>
1 file changed