provider network for L3 gateways (NVP)

[Salvatore Orlando]

In the current implementation of the NVP plugin we are unable to leverage multiple gateway services.
This would be somewhat limiting for large deployments.

The provider networks extension could be used to solve this issue.
A new network type can be added for NVP external networks, with the following mappings:

physical_network_id => l3 gw service uuid
segmentation_id => vlan_id for logical router port attachment
network_type => 'nvp_external'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/22929

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/22929
Committed: http://github.com/openstack/quantum/commit/7d736867a34f6db592dc67813dececf6e94294d0
Submitter: Jenkins
Branch: master

commit 7d736867a34f6db592dc67813dececf6e94294d0
Author: Salvatore Orlando <email address hidden>
Date: Mon Feb 25 15:41:06 2013 +0100

    Enable multiple L3 GW services on NVP plugin

    Bug 1130211

    This patch allows for using multiple layer-3 gateways leveraging the
    provider networks extension.

    Change-Id: I293920c2565f4670e9be9b22dc1b60431b62f7e7