native OVSDB needs to use Row.delete() for rows deletions

[Gal Sagie]

The current OVSDB deletion mechanism needs to use the Row.delete() in order to properly delete the rows

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/172134

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/172134
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=dc31fecdd978a8c56d33bc0f1672e680e273111d
Submitter: Jenkins
Branch: master

commit dc31fecdd978a8c56d33bc0f1672e680e273111d
Author: Gal Sagie <email address hidden>
Date: Thu Apr 9 18:57:52 2015 +0300

    OVSDB python binding should use row.delete() to remove rows

    The OVS python IDL recognize a delete event when delete() is called
    on the row, this should be used to remove rows from the db

    Change-Id: I50c94a4f089659d78f8881653cd55d4ef069cdc1
    Closes-Bug: #1442217

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: neutron-pecan
Review: https://review.openstack.org/185072