Make run_remote_tests also update the chroot autotest

src/scripts/autotest_lib.sh

+# Copyright (c) 2010 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.
+#
+# Provides common commands for dealing running/building autotest
+
+# Populates the chroot's /usr/local/autotest directory based on
+# the given source directory.
+# args:
+#   $1 - original source directory
+function update_chroot_autotest() {
+  local original=$1
+  echo "Updating chroot Autotest from ${original}..."
+  local autotest_dir="${DEFAULT_CHROOT_DIR}/usr/local/autotest"
+  sudo mkdir -p "${autotest_dir}"
+  sudo chmod 777 "${autotest_dir}"
+  cp -fpru ${original}/{client,conmux,server,tko,utils,global_config.ini,shadow_config.ini} ${autotest_dir}
+}