expose openvswitch GRE tunnel_id via provider API

[Robert Kukura]

The provider extension API exposes details such as the physical network and vlan_id for flat and VLAN networks to administrators, but only the network_type for GRE networks. An administrator may need to know the tunnel_id for debugging or other purposes. The provider:vlan_id extended attribute should be renamed to something more general, such as provider:segmentation_id, and the openvswitch plugin operations should return this the tunnel_id as this field. The ability to create a provider GRE network with a specific tunnel_id does not seem to be required.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/12271

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/12271
Committed: http://github.com/openstack/quantum/commit/493903c0d03e53fd8192dff2177698d332935087
Submitter: Jenkins
Branch: master

commit 493903c0d03e53fd8192dff2177698d332935087
Author: Bob Kukura <email address hidden>
Date: Fri Aug 31 00:12:41 2012 -0400

    expose openvswitch GRE tunnel_id via provider API

    The provider:vlan_id extended attribute is renamed to
    provider:segmentation_id, and the openvswitch plugin returns the
    tunnel_id of GRE networks as this attribute.

    Fixes bug 1044375. Final patch in series that fixes bug 1037341 and
    bug 1035492.

    Detailed changes:

    - Rename provider:vlan_id to provider:segmentation_id.
    - Use consts for providernet extension's attribute names
    - Remove validation clause from provider:segmentation_id resource attribute map data.
    - Validate provider:segmentation_id in linuxbridge and openvswitch plugins.
    - Rename physical_id to segmentation_id in the openvswitch schema, plugin, and agent.

    Change-Id: Ic023b30b6e3275955bcb8a09c7936035dacf3f87