crosutils: Add vnc view of tests and running multiple tests for VM tests

bin/cros_start_vm

 #!/bin/bash
 
 # 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.
 #
 # Simple wrapper scipt to start a vm using the vm lib.
 
 . "$(dirname $0)/../common.sh"
 . "$(dirname $0)/../lib/cros_vm_lib.sh"
 . "$(dirname "$0")/../lib/cros_vm_constants.sh"
 
+get_default_board
+
+DEFINE_string board "${DEFAULT_BOARD}" \
+    "Board for VM image (unnecessary if path given)"
 DEFINE_string image_path "" "Full path of the VM image"
 
 set -e
 
 # Parse command line.
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"
 
 # Use latest if not specified.
 if [ -z "${FLAGS_image_path}" ]; then
-  LATEST_IMAGE="$(${SCRIPTS_DIR}/get_latest_image.sh)/${DEFAULT_QEMU_IMAGE}"
+  LATEST_IMAGE="$(${SCRIPTS_DIR}/get_latest_image.sh \
+          --board=${FLAGS_board})/${DEFAULT_QEMU_IMAGE}"
   info "Using latest vm image ${LATEST_IMAGE}"
   FLAGS_image_path=${LATEST_IMAGE}
 fi
 
 [ -e "${FLAGS_image_path}" ] || die "Image ${FLAGS_image_path} does not exist."
 
 start_kvm "${FLAGS_image_path}"
 
 echo "ssh root@${HOSTNAME} -p ${FLAGS_ssh_port} -o StrictHostKeyChecking=no"