Verify system time.

Verify that system time is later than release filesystem creation time.

BUG=chrome-os-partner:1784
TEST=make_factory_package.sh to USB, boot from USB, and then run to
     finalize step.

Change-Id: Ic90d69b4fde412b8e82a8283f0e69769f993a37a
Reviewed-on: http://gerrit.chromium.org/gerrit/7324
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: Chinyue Chen <chinyue@chromium.org>
2 files changed