Select factory image when --factory is given

mod_image_for_test.sh

 #!/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.
 
 # Script to modify a keyfob-based chromeos system image for testability.
 
 # --- BEGIN COMMON.SH BOILERPLATE ---
 # Load common CrOS utilities.  Inside the chroot this file is installed in
@@ skipping 160 matching lines @@
 }
 
 # main process begins here.
 
 IMAGE_DIR="$(dirname "${FLAGS_image}")"
 
 # Copy the image to a test location if required
 if [ ${FLAGS_inplace} -eq ${FLAGS_FALSE} ]; then
   if [ ${FLAGS_factory} -eq ${FLAGS_TRUE} ]; then
     TEST_PATHNAME="${IMAGE_DIR}/${CHROMEOS_FACTORY_TEST_IMAGE_NAME}"
+    typename="factory"
   else
     TEST_PATHNAME="${IMAGE_DIR}/${CHROMEOS_TEST_IMAGE_NAME}"
+    typename="test"
   fi
   if [ ! -f "${TEST_PATHNAME}" ] || \
      [ ${FLAGS_force_copy} -eq ${FLAGS_TRUE} ] ; then
     echo "Creating test image from original..."
     ${COMMON_PV_CAT} "${FLAGS_image}" >"${TEST_PATHNAME}" \
       || die "Cannot copy ${FLAGS_image} to test image"
     FLAGS_image="${TEST_PATHNAME}"
   else
-    echo "Using cached test image"
+    echo "Using cached ${typename} image"
     exit
   fi
 
   # No need to confirm now, since we are not overwriting the main image
   FLAGS_yes="$FLAGS_TRUE"
 fi
 
 # Make sure this is really what the user wants, before nuking the device
 if [ $FLAGS_yes -ne $FLAGS_TRUE ]; then
   read -p "Modifying image ${FLAGS_image} for test; are you sure (y/N)? " SURE
@@ skipping 71 matching lines @@
 cleanup
 
 # Now make it bootable with the flags from build_image
 "${SCRIPTS_DIR}/bin/cros_make_image_bootable" "$(dirname "${FLAGS_image}")" \
                                             $(basename "${FLAGS_image}")
 
 print_time_elapsed
 
 trap - EXIT