Change run_remote_tests from portage build env.

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
 
+DEFINE_string board "" "The board for which you are building autotest"
+
+function check_board() {
+  local board_names=""
+  local index=1
+  local found=0
+  for board in ../overlays/overlay-*
+  do
+    board_names[index]=${board:20}
+    index+=1
+    if [ "${FLAGS_board}" == "${board:20}" ]
+    then
+      found=1
+    fi
+  done
+
+  if [ ${found} -eq 0 ]
+  then
+    echo "You are required to specify a supported board from the command line."
+    echo "Supported boards are:"
+    for board in ${board_names[@]}
+    do
+      echo ${board}
+    done
+  exit 0
+  fi
+}
+
+
 # Populates the chroot's /usr/local/autotest/$FLAGS_board directory based on
 # the given source directory.
 # args:
 #   $1 - original source directory
 #   $2 - target directory
 function update_chroot_autotest() {
   local original=$1
   local target=$2
   echo "Updating chroot Autotest from ${original} to ${target}..."
   sudo mkdir -p "${target}"
   sudo chmod 777 "${target}"
   cp -fpru ${original}/{client,conmux,server,tko,utils,global_config.ini,shadow_config.ini} ${target}
 }