saharaclient should check the input param when cluster-create

[warewang]

I excute the shell command--sahara cluster-create, I wait a long time, but it return nothing. I look at the cold, found that :
@utils.arg('--json',
           default=sys.stdin,
           type=argparse.FileType('r'),
           help='JSON representation of cluster.')
def do_cluster_create(cs, args):
    """Create a cluster."""
    # TODO(mattf): improve template validation, e.g. template w/o name key
    template = json.loads(args.json.read())
    # The neutron_management_network parameter to clusters.create is
    # called net_id. Therefore, we must translate before invoking
    # create w/ **template. It may be desirable to simple change
    # clusters.create in the future.
    remap = {'neutron_management_network': 'net_id'}
    _filter_call_args(template, cs.clusters.create, remap)

    _show_cluster(cs.clusters.create(**template))

I think, if args is none, the default is stdin, so the thread is wait the user's input. I think it need to judge the args shoud not be empty.

[Andrew Lazarev (alazarev)]

As I remember it was done intentionally. I'm not sure what the right behavior, a good topic to discuss on weekly meeting.

[Michael McCune (mimccune)]

marking this as triaged since we have agreed that it requires further information from the dev team.

this has been added to the weekly meeting agenda for August 20.

[Vitalii Gridnev (vgridnev)]

The bug touches old CLI which is deprecated