Comment 2 for bug 1329233

Input in this test is incorrect. neutron help port-create shows:
  --fixed-ip ip_address=IP_ADDR
                        desired IP for this port:
                        subnet_id=<name_or_id>,ip_address=<ip>, (This option
                        can be repeated.)

but ip-address(no underscore) was specified in test.
Verified correct funtionality when ip_address was given. Also verified nova boot with v4-fixed-ip.

Also seems that latest python-neutronclient disallows incorrect input per
https://bugs.launchpad.net/python-neutronclient/+bug/1318022