script: Add method to construct nvme bdev

p.add_argument('fname', help='Path to device or file (ex: /dev/sda)')

p.set_defaults(func=construct_aio_lun)

def construct_nvme_bdev(args):

    params = {'pci_address': args.pci_address}

    jsonrpc_call('construct_nvme_bdev', params)

p = subparsers.add_parser('construct_nvme_bdev', help='Add bdev with nvme backend')

p.add_argument('pci_address', help='PCI address domain:bus:device.function')

p.set_defaults(func=construct_nvme_bdev)

def set_trace_flag(args):

    params = {'flag': args.flag}