Comment 8 for bug 1806032

Reviewed: https://review.openstack.org/637935
Committed: https://git.openstack.org/cgit/openstack/neutron-lib/commit/?id=cb0d01db91a1f82b17117a7bb64e5dea3e6b3b28
Submitter: Zuul
Branch: master

commit cb0d01db91a1f82b17117a7bb64e5dea3e6b3b28
Author: Bence Romsics <email address hidden>
Date: Mon Feb 18 14:32:23 2019 +0100

    Remove ml2's accidental dependency on l3

    The accidental dependency was never in effect since the neutron side of
    the relevant changes was not merged yet.

    I think I made a mistake in https://review.openstack.org/631515.
    We added the 'router' extension as a dependency of the
    'floatingip-autodelete-internal' extension. Which looks a perfectly
    reasonable thing to do at first sight. However since the 'external-net'
    extension was de-extensionalized and made part of the ml2 plugin, the
    'floatingip-autodelete-internal' extension also had to be implemented by
    the ml2 plugin. This complicated setup practically made the l3 plugin
    a dependency of the ml2 plugin. (That's why unit tests started failing
    in patch set #3 of the neutron change.) Which of course is non-sense.

    So this change removes the dependency. The neutron side of this
    change still degrades gracefully even without the explicit dependency
    between the extensions, so I don't think we're losing anything by not
    having that dependency.

    Change-Id: I8825eaf4f46ea2639131e34f9b833af1de6ab1b4
    Needed-By: https://review.openstack.org/624751
    Partial-Bug: #1806032
    Related-Change: https://review.openstack.org/631515