Change of default netpartition behavior in nuage plugin

[Ronak Shah]

Current behavior of nuage plugin assumes a clean slate on the VSD (back-end controller) as part of the neutron startup. There are use-cases where this assumption is invalid. Also, there could exist non default net-partitions on the VSD for which behavior is not the same as for default net-partition. This needs to be fixed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/98532

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/98532
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=3190e5b672ac21f9c82110d319473f2041bf64f7
Submitter: Jenkins
Branch: master

commit 3190e5b672ac21f9c82110d319473f2041bf64f7
Author: Divya ChanneGowda <email address hidden>
Date: Fri Jun 6 14:29:21 2014 -0700

    Change default netpartition behavior in nuage plugin

    Allows the nuage plugin handle the case where default netpartition
    already exists on the VSD (back-end controller)

    Change-Id: Ia5785c1c313cf30b8bad6cda1d0e9819784e06d8
    Closes-Bug: #1319892