Devstack install for ML2 OVS

[LIU Yulong]

Since devstack had set OVN as the default backend for Neutron. Then the minimum local.conf [1] for ML2 ovs will not work at all. For some local testing of ML2 OVS, it is not right deployment for users to test the ML2 OVS related cases.

Neutron needs to add a sample local.conf for ML2 OVS to install a small all in one environment by using devstack. Then cloud users can use it to have a try for openstack and testing.

(This is a bug track for patch https://review.opendev.org/c/openstack/neutron/+/799159)

[1] https://docs.openstack.org/devstack/latest/#create-a-local-conf

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/799159
Committed: https://opendev.org/openstack/neutron/commit/ca15099cde582e9049360238c75803f022499eb1
Submitter: "Zuul (22348)"
Branch: master

commit ca15099cde582e9049360238c75803f022499eb1
Author: LIU Yulong <email address hidden>
Date: Fri Jul 2 11:35:23 2021 +0800

    Add devstack local.conf sample for ML2 OVS

    Since devstack had set OVN as the default backend for Neutron.
    Then the minimum local.conf [1] for ML2 ovs will not work at
    all. For some local testing of ML2 OVS, it is not right deployment
    for users to test the ML2 OVS related cases.

    This patch adds a sample local.conf for ml2 ovs to install a small
    all in one environment for Neutron testing.

    Sample tested OS:
    1. CentOS Stream 8
    2. CentOS Linux 8

    [1] https://docs.openstack.org/devstack/latest/#create-a-local-conf

    Closes-Bug: #1934466
    Change-Id: Ie7bac1d2819c332a94a0ff308a300638c17f1b1f

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 19.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/818911
Committed: https://opendev.org/openstack/neutron/commit/770b64b90e0ada90a40538830002fc447a8dee9c
Submitter: "Zuul (22348)"
Branch: master

commit 770b64b90e0ada90a40538830002fc447a8dee9c
Author: yatinkarel <email address hidden>
Date: Tue Nov 23 17:10:50 2021 +0530

    Fix tunnel_types in ml2 ovs sample config

    Without this port binding fails with below error:-

    Network <nw> is type of vxlan but agent <host> or mechanism
    driver only support ['gre', 'local', 'flat', 'vlan'].

    Also fix permissions of /opt/stack/devstack in ml2 ovs testing
    documentation and added these files to irrelevant-files to skip
    running functional jobs as these files are not used in those jobs.

    Related-Bug: #1934466
    Change-Id: I3ca2ea19bf5e316e580669caab4c607447034a11