Revert "Try reverting Neutron ovs-agent change"

This reverts commit 098cbda6986d3009993da3fc61e7b6a45db5026c.

The neutron revert for this has landed:

  https://review.openstack.org/#/c/101395/

So we no longer need to revert it on our side.

Change-Id: I70a1b72d17722be5abd37befc61b867b01e58e7f
Merge "Revert "Try reverting Neutron ovs-agent change""