Comment 16 for bug 1210121

Reviewed: https://review.openstack.org/96866
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=dbbc8338770d2c340903e006dcb3c90c4aad7b29
Submitter: Jenkins
Branch: stable/havana

commit dbbc8338770d2c340903e006dcb3c90c4aad7b29
Author: armando-migliaccio <email address hidden>
Date: Thu Mar 13 12:40:01 2014 -0700

    Kill 'Skipping unknown group key: firewall_driver' log trace

    This is done by trying to import the option first. If this
    does not work, emit a warning instead as in most cases this is
    harmless for a number of reasons: a) the service might not
    even need the opt; b) if things do break down the line, we'll
    see bigger traces; c) it's not gonna be long for this legacy
    quantum/neutron stuff to be removed altogether.

    Closes-bug: 1210121

    Change-Id: I34917da9cb6117ee1d42140621c742f503279b6b
    (cherry picked from commit b5ee49623982530bfb3c3fe2eefb9d8ddb6353bc)