"neutron help port-update" missing some help info

OpenStack version: Juno

ubuntu@trusty1:~/devstack$ nova-manage version
2015.1.0

Issue: "neutron help port-update" missing the following help info
   --name
   --admin_state_up
   --device_id
   --device_owner

ubuntu@trusty1:~/devstack$ neutron help port-update
usage: neutron port-update [-h] [--request-format {json,xml}]
                           [--security-group SECURITY_GROUP | --no-security-groups]
                           [--extra-dhcp-opt EXTRA_DHCP_OPTS]
                           PORT

Update port's information.

positional arguments:
  PORT ID or name of port to update.

optional arguments:
  -h, --help show this help message and exit
  --request-format {json,xml}
                        The XML or JSON request format.
  --security-group SECURITY_GROUP
                        Security group associated with the port. You can
                        repeat this option.
  --no-security-groups Associate no security groups with the port.
  --extra-dhcp-opt EXTRA_DHCP_OPTS
                        Extra dhcp options to be assigned to this port:
                        opt_name=<dhcp_option_name>,opt_value=<value>. You can
                        repeat this option.

<1> User is able to update "name":
==============================
ubuntu@trusty1:~/devstack$ neutron port-list
+--------------------------------------+--------------+-------------------+-----------------------------------------------------------------------------------+
| id | name | mac_address | fixed_ips |
+--------------------------------------+--------------+-------------------+-----------------------------------------------------------------------------------+
| 904f3dff-7298-4e63-a399-97fec10020b0 | | fa:16:3e:ff:b4:c8 | {"subnet_id": "3f5b84c5-937e-44ae-b645-64758386a501", "ip_address": "10.0.0.14"} |
+--------------------------------------+--------------+-------------------+-----------------------------------------------------------------------------------+
ubuntu@trusty1:~/devstack$ neutron port-show 904f3dff-7298-4e63-a399-97fec10020b0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| admin_state_up | True |
| allowed_address_pairs | |
| binding:host_id | |
| binding:profile | {} |
| binding:vif_details | {} |
| binding:vif_type | unbound |
| binding:vnic_type | normal |
| device_id | |
| device_owner | |
| extra_dhcp_opts | |
| fixed_ips | {"subnet_id": "3f5b84c5-937e-44ae-b645-64758386a501", "ip_address": "10.0.0.14"} |
| id | 904f3dff-7298-4e63-a399-97fec10020b0 |
| mac_address | fa:16:3e:ff:b4:c8 |
| name | |
| network_id | b18a4a3f-7167-4c61-87f5-b21f87118160 |
| security_groups | b65b1238-ca73-46ae-8670-f61fd22a8d52 |
| status | DOWN |
| tenant_id | db81f81239f54d5d89293dacc7a284d2 |
+-----------------------+----------------------------------------------------------------------------------+
ubuntu@trusty1:~/devstack$ neutron port-update 904f3dff-7298-4e63-a399-97fec10020b0 --name TEST_PORT <<< update the "name" attribute
Updated port: 904f3dff-7298-4e63-a399-97fec10020b0
ubuntu@trusty1:~/devstack$ neutron port-show 904f3dff-7298-4e63-a399-97fec10020b0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| admin_state_up | True |
| allowed_address_pairs | |
| binding:host_id | |
| binding:profile | {} |
| binding:vif_details | {} |
| binding:vif_type | unbound |
| binding:vnic_type | normal |
| device_id | |
| device_owner | |
| extra_dhcp_opts | |
| fixed_ips | {"subnet_id": "3f5b84c5-937e-44ae-b645-64758386a501", "ip_address": "10.0.0.14"} |
| id | 904f3dff-7298-4e63-a399-97fec10020b0 |
| mac_address | fa:16:3e:ff:b4:c8 |
| name | TEST_PORT | <<< "name" updated
| network_id | b18a4a3f-7167-4c61-87f5-b21f87118160 |
| security_groups | b65b1238-ca73-46ae-8670-f61fd22a8d52 |
| status | DOWN |
| tenant_id | db81f81239f54d5d89293dacc7a284d2 |
+-----------------------+----------------------------------------------------------------------------------+

<2> User is able to update "admin_state_up":
==========================
ubuntu@trusty1:~/devstack$ neutron port-update 904f3dff-7298-4e63-a399-97fec10020b0 --admin_state_up false <<< update the "admin_state_up" attribute
Updated port: 904f3dff-7298-4e63-a399-97fec10020b0
ubuntu@trusty1:~/devstack$ neutron port-show 904f3dff-7298-4e63-a399-97fec10020b0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| admin_state_up | False | <<< "admin_state_up" updated
| allowed_address_pairs | |
| binding:host_id | |
| binding:profile | {} |
| binding:vif_details | {} |
| binding:vif_type | unbound |
| binding:vnic_type | normal |
| device_id | |
| device_owner | |
| extra_dhcp_opts | |
| fixed_ips | {"subnet_id": "3f5b84c5-937e-44ae-b645-64758386a501", "ip_address": "10.0.0.14"} |
| id | 904f3dff-7298-4e63-a399-97fec10020b0 |
| mac_address | fa:16:3e:ff:b4:c8 |
| name | TEST_PORT |
| network_id | b18a4a3f-7167-4c61-87f5-b21f87118160 |
| security_groups | b65b1238-ca73-46ae-8670-f61fd22a8d52 |
| status | DOWN |
| tenant_id | db81f81239f54d5d89293dacc7a284d2 |
+-----------------------+----------------------------------------------------------------------------------+

<3> User is able to update "device_id":
===========================
ubuntu@trusty1:~/devstack$ neutron port-update 904f3dff-7298-4e63-a399-97fec10020b0 --device_id 1df2b3a0-f37a-4279-963d-a6f4573763a8 <<< update the "device_id" attribute
Updated port: 904f3dff-7298-4e63-a399-97fec10020b0
ubuntu@trusty1:~/devstack$ neutron port-show 904f3dff-7298-4e63-a399-97fec10020b0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| admin_state_up | False |
| allowed_address_pairs | |
| binding:host_id | |
| binding:profile | {} |
| binding:vif_details | {} |
| binding:vif_type | unbound |
| binding:vnic_type | normal |
| device_id | 1df2b3a0-f37a-4279-963d-a6f4573763a8 | <<< "device_id" updated
| device_owner | |
| extra_dhcp_opts | |
| fixed_ips | {"subnet_id": "3f5b84c5-937e-44ae-b645-64758386a501", "ip_address": "10.0.0.14"} |
| id | 904f3dff-7298-4e63-a399-97fec10020b0 |
| mac_address | fa:16:3e:ff:b4:c8 |
| name | TEST_PORT |
| network_id | b18a4a3f-7167-4c61-87f5-b21f87118160 |
| security_groups | b65b1238-ca73-46ae-8670-f61fd22a8d52 |
| status | DOWN |
| tenant_id | db81f81239f54d5d89293dacc7a284d2 |
+-----------------------+----------------------------------------------------------------------------------+

<4> User is able to update "device_owner":
=============================
ubuntu@trusty1:~/devstack$ neutron port-update 904f3dff-7298-4e63-a399-97fec10020b0 --device_owner network:router_interface <<< update the "device_owner" attribute
Updated port: 904f3dff-7298-4e63-a399-97fec10020b0
ubuntu@trusty1:~/devstack$ neutron port-show 904f3dff-7298-4e63-a399-97fec10020b0
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
| admin_state_up | False |
| allowed_address_pairs | |
| binding:host_id | |
| binding:profile | {} |
| binding:vif_details | {} |
| binding:vif_type | unbound |
| binding:vnic_type | normal |
| device_id | 1df2b3a0-f37a-4279-963d-a6f4573763a8 |
| device_owner | network:router_interface | <<< "device_owner" updated
| extra_dhcp_opts | |
| fixed_ips | {"subnet_id": "3f5b84c5-937e-44ae-b645-64758386a501", "ip_address": "10.0.0.14"} |
| id | 904f3dff-7298-4e63-a399-97fec10020b0 |
| mac_address | fa:16:3e:ff:b4:c8 |
| name | TEST_PORT |
| network_id | b18a4a3f-7167-4c61-87f5-b21f87118160 |
| security_groups | b65b1238-ca73-46ae-8670-f61fd22a8d52 |
| status | DOWN |
| tenant_id | db81f81239f54d5d89293dacc7a284d2 |
+-----------------------+----------------------------------------------------------------------------------+