[OVN] Add "external_ids:ovn-encap-tos" options to Controller and Networker nodes

[Rodolfo Alonso]

Add a new configuration option to be set in the OVS database register "Open_vSwitch" of the related node: external_ids:ovn-encap-tos

This value [1] "indicates the value to be applied to OVN tunnel interface’s option:tos as specified in the Open_vSwitch database Interface table."

Since [2] (v21.12.0), OVN is capable of reading and using this configuration parameter.

Just for documentation, example of how OVS uses this parameter to copy the inner packet DSCP mark into the outer one: https://andreaskaris.github.io/blog/networking/ovs-vxlan-tunnels-and-dscp/

[1]https://www.ovn.org/support/dist-docs/ovn-controller.8.html
[2]https://github.com/ovn-org/ovn/commit/9f2eb5cdb6d67fc8c7e6f477bc4bdc94cfbca028

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/854127

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/854127
Committed: https://opendev.org/openstack/tripleo-heat-templates/commit/70509f5c3f48fec2554e905d37077ecd521b177b
Submitter: "Zuul (22348)"
Branch: master

commit 70509f5c3f48fec2554e905d37077ecd521b177b
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Fri Aug 12 12:30:15 2022 +0200

    Add parameter OVNEncapTos

    Added parameter OVNEncapTos to indicates the value to be applied to
    the OVN tunnel inteface's option:tos, as specified in the
    Open_vSwitch database Interface table. The default value is "0".
    "inherit" allows to copy the inner ToS into the outer packet header.

    Closes-Bug: #1987382
    Depends-on: https://review.opendev.org/854221
    Change-Id: Ia7c09fb987cbdca50a4ba693bfd79b8b3c503808

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/wallaby
Review: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/857189

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/857189
Committed: https://opendev.org/openstack/tripleo-heat-templates/commit/ffc854fed704368de4c42b578e0f59af2f4640f1
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit ffc854fed704368de4c42b578e0f59af2f4640f1
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Fri Aug 12 12:30:15 2022 +0200

    Add parameter OVNEncapTos

    Added parameter OVNEncapTos to indicates the value to be applied to
    the OVN tunnel interface's option:tos, as specified in the
    Open_vSwitch database Interface table. The default value is "0".
    "inherit" allows to copy the inner ToS into the outer packet header.

    Closes-Bug: #1987382
    Depends-on: https://review.opendev.org/854221
    Change-Id: Ia7c09fb987cbdca50a4ba693bfd79b8b3c503808
    (cherry picked from commit 70509f5c3f48fec2554e905d37077ecd521b177b)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 17.0.0 release.