FWaaS Wrong help message for description

[James Arendt]

Incorrect description message for 'neutron firewall-create'. Should just be 'Description for the firewall', not 'Description for the firewall rule." Firewall rule is a different resource.

> neutron help firewall-create

Create a firewall.

positional arguments:
  POLICY Firewall policy name or ID.

optional arguments:
  -h, --help show this help message and exit
  --request-format {json}
                        DEPRECATED! Only JSON request format is supported.
  --tenant-id TENANT_ID
                        The owner tenant ID.
  --name NAME Name for the firewall.
  --description DESCRIPTION
                        Description for the firewall rule.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/275424

[OpenStack Infra (hudson-openstack)]

Change abandoned by James Arendt (<email address hidden>) on branch: master
Review: https://review.openstack.org/275424
Reason: Made obsolete by merged patch https://review.openstack.org/#/c/234518/