command install use new image syntax

    '''

    Install an image

    '''

    # looks if arguments is a file or image name

    if istools.isfile(args.image) and os.path.isfile(args.image):

        pkg = PackageImage(istools.abspath(args.image))

    elif PackageImage.check_image_name(args.image):

        # get image package

    # select image to install

    repoman = load_repositories(args)

        pkg = repoman.get(args.image, args.image_version)

    img = select_image(args.image, repoman)[0]

    # add default show help options

    args.subparser.add_argument("-h", "--help", action="help", default=argparse.SUPPRESS,

                                help="show program's version number and exit")

    # Print setup information

    arrow("Installing %s v%s" % (pkg.name, pkg.version))

    arrow("Installing %s v%s" % (img.name, img.version))

    # install start time

    t0 = time.time()

    # run parser scripts with parser parser argument

    pkg.run_parser(parser=args.subparser)

    img.run_parser(parser=args.subparser)

    # call parser again, with extended attributes

    arrow("Parsing arguments")

    args = parser.parse_args(namespace=args)

    # run setup scripts

    pkg.run_setup(namespace=args)

    img.run_setup(namespace=args)

    # compute building time

    t1 = time.time()

    dt = int(t1 - t0)

# install command parser

p_install = subparsers.add_parser("install", add_help=False,

                                  help=c_install.__doc__.lower())

p_install.add_argument("-f", "--force", action="store_true", default=False,

                       help="overwrite existing image")

p_install.add_argument("-v", "--image-version", type=int, default=None,

                       help="image version")

p_install.add_argument("image", help="image to install (path or name)")

p_install.add_argument("image", help="image to install")

p_install.set_defaults(func=c_install, subparser=p_install)

# list command parser