Multihost floating interface override is broken

[Vish Ishaya]

We allow individual nodes to override the floating interface by setting public_interface=XXX on the node. Unfortunately in multihost an associate or disassociate call can be forwarded from one host to another. Currently the override happens on the caller instead of the callee

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/19140

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/19140
Committed: http://github.com/openstack/nova/commit/bdc4860866c432ff4be899ffc444f38efd9e371b
Submitter: Jenkins
Branch: master

commit bdc4860866c432ff4be899ffc444f38efd9e371b
Author: Vishvananda Ishaya <email address hidden>
Date: Mon Jan 7 10:55:26 2013 -0800

    Override floating interface on callee side

    We allow individual nodes to override the floating interface by setting
    public_interface=XXX on the node. Unfortunately in multi_host an
    associate or disassociate call can be forwarded from one host to
    another. Currently the override happens on the caller side instead of
    the callee side. This fixes the issue by moving the override.

    Fixes bug 1096987

    Change-Id: I37fbbf9e0ee0ffbe8c8754649301371b98da9f4f