Comment 35 for bug 1460177

Reviewed: https://review.opendev.org/750355
Committed: https://git.openstack.org/cgit/openstack/neutron-tempest-plugin/commit/?id=6158965423f3f3315b21eae2ea80403a12864511
Submitter: Zuul
Branch: master

commit 6158965423f3f3315b21eae2ea80403a12864511
Author: Bence Romsics <email address hidden>
Date: Fri Sep 4 14:49:58 2020 +0200

    Test metadata over IPv6

    To ssh into the instance we use an IPv4 floating IP,
    but then we test accessing metadata over IPv6.

    tempest.conf:

    [neutron_plugin_options]
    advanced_image_ref = ubuntu 16.04 does not but 18.04 and 20.04 work
    advanced_image_flavor_ref = d1 # ds512M
    advanced_image_ssh_user = ubuntu
    default_image_is_advanced = False

    Introduce new tempest(-plugin) boolean config option:
        neutron_plugin_options.ipv6_metadata
        Defaults to True.
    This controls whether the test should run since API extension based
    auto-discovery is naturally unavailable for the feature.

    Disable executing the test in ovn and older-than-victoria gate jobs.

    Change-Id: I7a1d2057489067e555cb247e473ad11e63dbdd86
    Related-Bug: #1460177