Comment 1 for bug 1634923

Login in resolve_configs:

    if plugin == OVS:
        # NOTE: deal with switch to ML2 plugin for >= icehouse
        drop_config = [NEUTRON_OVS_AGENT_CONF]
        if release >= 'mitaka':
            # ml2 -> ovs_agent
            drop_config = [NEUTRON_ML2_PLUGIN_CONF]