Neutron: List extensions show redundant parameter

Networking API v2.0 extensions (Extensions): http://developer.openstack.org/api-ref-networking-v2-ext.html

Issue: Lists available Networking API v2.0 extensions and shows details for a specified extension that currently showing redundant "namespace" parameter. Because the "namespace" has been removed according to the following WIP: https://review.openstack.org/#/c/190215/

For example:
Current:
{
    "extensions": [
        {
            "updated": "2013-01-20T00:00:00-00:00",
            "name": "Neutron Service Type Management",
            "links": [],
            "namespace": "http://docs.openstack.org/ext/neutron/service-type/api/v1.0",
            "alias": "service-type",
            "description": "API for retrieving service providers for Neutron advanced services"
        },
        {
            "updated": "2012-10-05T10:00:00-00:00",
            "name": "security-group",
            "links": [],
            "namespace": "http://docs.openstack.org/ext/securitygroups/api/v2.0",
            "alias": "security-group",
            "description": "The security groups extension."
        },
..........}

It should be updated as below:

{
    "extensions": [
        {
            "updated": "2013-01-20T00:00:00-00:00",
            "name": "Neutron Service Type Management",
            "links": [],
            "alias": "service-type",
            "description": "API for retrieving service providers for Neutron advanced services"
        },
        {
            "updated": "2012-10-05T10:00:00-00:00",
            "name": "security-group",
            "links": [],
            "alias": "security-group",
            "description": "The security groups extension."
        },
..........}