Comment 8 for bug 1302701

Reviewed: https://review.openstack.org/133464
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=39736e88a87a15140309ca39d50bffb2327adbaf
Submitter: Jenkins
Branch: stable/icehouse

commit 39736e88a87a15140309ca39d50bffb2327adbaf
Author: Lars Kellogg-Stedman <email address hidden>
Date: Fri Apr 4 13:35:32 2014 -0400

    allow delete_port to work when there are multiple floating ips

    It is possible to associate multiple floating ip addresses with a single
    port through the use of multiple *fixed* ip addresses, e.g.:

        nova boot ... --nic net-id=my-net-id myserver
        nova add-fixed-ip myserver my-net-id
        nova add-floating-ip --fixed-address x.x.x.1 myserver y.y.y.y.1
        nova add-floating-ip --fixed-address x.x.x.2 myserver y.y.y.y.2

    In this situation, neutron.db.l3_db.disassociate_floatingips would throw
    an exception:

        Exception: Multiple floating IPs found for port <port-id>

    This would prevent someone from deleting an instance that was associated
    with multiple floating ips.

    This patch corrects disassociate_floatingips so that it will
    disassociate all floating ips associated with the port, allowing the
    delete operation to proceed correctly.

    Conflicts:
     neutron/db/l3_db.py

    Change-Id: I68a2131fa8ee80828354c9db4ac405c3f77c3b90
    Closes-bug: 1302701
    (cherry picked from commit bad87ce76ad27f2a4b3c72e26e2eccc2c9564b85)