Comment 14 for bug 2002687

Reviewed: https://review.opendev.org/c/openstack/neutron-lib/+/870887
Committed: https://opendev.org/openstack/neutron-lib/commit/e52a9372f76aa104543ab04cf1723e58da17d379
Submitter: "Zuul (22348)"
Branch: master

commit e52a9372f76aa104543ab04cf1723e58da17d379
Author: Dmitrii Shcherbakov <email address hidden>
Date: Wed Jan 18 02:45:03 2023 +0300

    ext-gw-multihoming: api-def and api-ref

    API additions for [1].

    * Added a new router attribute: external_gateways;
    * Added new API definitions for:
        PUT add_external_gateways
        PUT update_external_gateways
        PUT remove_external_gateways
    * Added extensions for each of the new router-level attributes:
      * enable_default_route_ecmp
      * enable_default_route_bfd
    * Combined the validation logic for the external_gateway_info type
      across extensions (l3_ext_gw_mode, qos_gateway_ip and the new
      extension called l3_ext_gw_multihoming).

    [1] https://review.opendev.org/c/openstack/neutron-specs/+/870030/

    Change-Id: I2618475636b2bb9bfd743a62f5d4859d4f68a547
    Related-Bug: #2002687