Teach mod_image_for_test to disable idle-suspend features.

src/scripts/mod_for_test_scripts/200disableIdleSuspend

Index: src/scripts/mod_for_test_scripts/200disableIdleSuspend
diff --git a/src/scripts/mod_for_test_scripts/200disableIdleSuspend b/src/scripts/mod_for_test_scripts/200disableIdleSuspend
new file mode 100755
index 0000000000000000000000000000000000000000..fb134f026fc5ebc099b285a140ea48444fe0826d
--- /dev/null
+++ b/src/scripts/mod_for_test_scripts/200disableIdleSuspend
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# Copyright (c) 2009 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 "${STATEFUL_DIR}/var/lib/power_manager"
+echo 1 > "${STATEFUL_DIR}/var/lib/power_manager/disable_idle_suspend"