Download VM disks, and OVF from vCenter
    :param args:
    :return: created vmdk

def convert(args):
    """
    Download VM disks, and OVF from vCenter
    :param args:
    :return: created vmdk
    """
    exporter = OvfExporter(user=args.vcenter_user,password=args.vcenter_pass, host=args.vcenter_host, port=args.vcenter_port,
                           vm_name=args.vm_name, dir=args.directory)
    return exporter.export_ovf()