FWAAS_DRIVER=${FWAAS_DRIVER:-iptables}
FWAAS_PLUGIN=${FWAAS_PLUGIN:-firewall}
FWAAS_DRIVER_CONF_FILENAME=${FWAAS_DRIVER_CONF_FILENAME:-fwaas_driver.ini}
FWAAS_CONF_FILE=${Q_FWAAS_CONF_FILE:-$NEUTRON_CONF_DIR/$FWAAS_DRIVER_CONF_FILENAME}