default l3_gateway_service not passed on external provider networks

[Aaron Rosen]

Using the nvp plugin the following workflow will generate an error:

neutron net-create pub --router:external=True --provider:network_type l3_ext --provider:segmentation_id 99
neutron subnet-create pub 12.12.12.0/24
neutron router-create TOD
neutron router-gateway-set TOD pub

The error occurs as we do not pass the default_l3_gw_service_uuid to nvp in this cause. If one passed in: --provider:physical_network <uuid> that would work though as a work around. We should pass in the default_gw_service_uuid if one is not specified.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/46343

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/46343
Committed: http://github.com/openstack/neutron/commit/8372bbac08b296f632e5b743e3419d721b7abec1
Submitter: Jenkins
Branch: master

commit 8372bbac08b296f632e5b743e3419d721b7abec1
Author: Aaron Rosen <email address hidden>
Date: Thu Sep 12 12:42:29 2013 -0700

    pass default l3_gateway_service_uuid if not specified

    Previously, if one created an external network of type l3_ext and did
    not specify the default_gw_service_uuid via --provider:physical_network
    an exception would be raised on the backend as we need to specify the
    l3_gw_service_uuid we want nvp to use.

    Fixes bug: 1224660

    Change-Id: I6312956528c17d6a704d4e4ef629916f6463312a