Help message for port-create command does not fully reflect supported subnet_id variant of --fixed-ip option

[Ihar Hrachyshka]

1. It does not mention subnet_id variant at all.

[root@rhel65 tempest(keystone_admin)]# neutron port-create
usage: neutron port-create [-h] [-f {shell,table}] [-c COLUMN]
                           [--variable VARIABLE] [--prefix PREFIX]
                           [--request-format {json,xml}]
                           [--tenant-id TENANT_ID] [--name NAME]
                           [--admin-state-down] [--mac-address MAC_ADDRESS]
                           [--device-id DEVICE_ID]
                           [--fixed-ip ip_address=IP_ADDR]
                           [--security-group SECURITY_GROUP | --no-security-groups [--extra-dhcp-opt EXTRA_DHCP_OPTS]
                           NETWORK
neutron port-create: error: too few arguments

2. When using --help, it mentions it inconsistently.

...
  --fixed-ip ip_address=IP_ADDR
                        Desired IP for this port:
                        subnet_id=<name_or_id>,ip_address=<ip>, (This option
                        can be repeated.)
...

This should make it clear you can use subnet_id argument without ip_address, to rely on Neutron to select one of IP addresses from the requested subnet.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/65690

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65690
Committed: https://git.openstack.org/cgit/openstack/python-neutronclient/commit/?id=15f9a0f469ecb3ac8e6a2fe744608951c629b3d2
Submitter: Jenkins
Branch: master

commit 15f9a0f469ecb3ac8e6a2fe744608951c629b3d2
Author: Ihar Hrachyshka <email address hidden>
Date: Thu Jan 9 14:24:28 2014 +0100

    Mention --fixed-ip subnet_id=<..> in help message

    Improved help message for port-create --fixed-ip subnet_id=<..> case:
     * ensure it's mentioned when no arguments are passed;
     * fixed wording of --help message to make it clear subnet_id may be
       passed without ip_address.

    Change-Id: Ie48099e0445f80dbff78766e42bc548f925cd208
    Closes-Bug: #1267465