mod_for_test_scripts: disable dark resume

To prevent problems since dark resume and some autotests both use the RTC,
disable dark resume by default for test images. If a test needs dark resume to
be enabled, it can modify the pref that's set by this script (or create a
power_manager pref with higher precedence) then restart powerd.

BUG=chromium-os:39707
TEST=power_Resume, power_UiResume

Change-Id: I9b6c32de65c9de27d74c3d7ad43924ad75d4816d
Reviewed-on: https://gerrit.chromium.org/gerrit/45049
Commit-Queue: Derek Basehore <dbasehore@chromium.org>
Reviewed-by: Derek Basehore <dbasehore@chromium.org>
Tested-by: Derek Basehore <dbasehore@chromium.org>
diff --git a/mod_for_test_scripts/200disableDarkResume b/mod_for_test_scripts/200disableDarkResume
new file mode 100755
index 0000000..c78797e
--- /dev/null
+++ b/mod_for_test_scripts/200disableDarkResume
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+mkdir -p "${ROOT_FS_DIR}/usr/share/power_manager"
+echo 1 > "${ROOT_FS_DIR}/usr/share/power_manager/disable_dark_resume"