Comment 7 for bug 1743425

Reviewed: https://review.openstack.org/569295
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=6bfbfdbb3db4daf815da6d1a16706f2eec0a2e35
Submitter: Zuul
Branch: stable/queens

commit 6bfbfdbb3db4daf815da6d1a16706f2eec0a2e35
Author: zhsun <email address hidden>
Date: Mon Jan 15 11:12:40 2018 +0800

    Fix delete vlan allocation error for ML2

    Method "delete()" of ovo object should be invoked.
    Closes-bug: #1743425
    Change-Id: I942e1a5072ce111beb94ffd6298bb3e23e2bb343
    (cherry picked from commit 6c4bc1cf0585bdbe3701e0a2a87659881f5b1c73)