Libra client exception with no port on node

[David Shrewsbury]

Note no port # on the node value:

$ libra_client create --name junk1 --protocol HTTP --node 10.0.0.1

Traceback (most recent call last):
  File "/Users/david/Devel/ignore/mypy/bin/libra_client", line 9, in <module>
    load_entry_point('python-libraclient==1.2', 'console_scripts', 'libra_client')()
  File "/Users/david/Devel/ignore/git/python-libraclient/libraclient/client.py", line 47, in main
    method(args)
  File "/Users/david/Devel/ignore/git/python-libraclient/libraclient/libraapi.py", line 132, in create_lb
    nodes.append({'address': addr[0], 'port': addr[1]})
IndexError: list index out of range