Resource cache should be delete after port remove from br-int

[LIU Yulong]

Ports are removed from the br-int, but the ovs-agent resource_cache still have them. If during this removal period, the port attributes changed/updated. Even worse if the update event is not received by the agent, as well as the port plug to the br-int again. The ovs-agent will use the obsolete resource informaction of the port. Something may not be processed well then.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/936235

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/936235
Committed: https://opendev.org/openstack/neutron/commit/6f06d8fa6684b6cbd41502163acaffc17f98cc8c
Submitter: "Zuul (22348)"
Branch: master

commit 6f06d8fa6684b6cbd41502163acaffc17f98cc8c
Author: LIU Yulong <email address hidden>
Date: Tue Nov 26 17:37:56 2024 +0800

    Remove port resource change after unplug

    Ports are removed (unplug) from the br-int, but
    the ovs-agent resource_cache still have them.
    If during this removal period, the port attributes
    changed/updated. Even worse if the update events
    were not received by the agent, as well as the
    port plug to the br-int again. The ovs-agent will
    use the obsolete resource informaction of the port.
    Something may not be processed well then.

    So, resource cache should be delete after port removed
    from br-int. This patch addresses this issue.

    Closes-Bug: #2089661

    Change-Id: Ia628ee196382b0672ce3424d7cb86f29a15a6d4d

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/941616