add FWaaS driver to l3_agent.ini

Change-Id: I793cd96d8e4ed8eb341e59deb7c5d11b15ab1bb3
diff --git a/neutron/files/mitaka/l3_agent.ini b/neutron/files/mitaka/l3_agent.ini
index fd19495..3916ec3 100644
--- a/neutron/files/mitaka/l3_agent.ini
+++ b/neutron/files/mitaka/l3_agent.ini
@@ -94,7 +94,7 @@
 # Name of bridge used for external network traffic. This should be set to an empty value for the Linux Bridge. When this parameter is set,
 # each L3 agent can be associated with no more than one external network. (string value)
 #external_network_bridge = br-ex
-external_network_bridge = 
+external_network_bridge =
 
 # Seconds between running periodic tasks (integer value)
 #periodic_interval = 40
@@ -229,7 +229,13 @@
 
 # Log agent heartbeats (boolean value)
 #log_agent_heartbeats = false
-
 {%- if fwaas.get('enabled', False) %}
 extensions = {{ fwaas[fwaas.api_version]['l3_extension'] }}
 {%- endif %}
+
+{%- if fwaas.get('enabled', False) %}
+[fwaas]
+driver = neutron_fwaas.services.firewall.drivers.linux.iptables_fwaas.IptablesFwaasDriver
+enabled = {{ fwaas.get('enabled', 'False') }}
+agent_version = {{ fwaas.api_version }}
+{%- endif %}