Restart lbaas agent when lbaas conf changed

Neutron-lbaas-agent container is not restart when neutron_lbaas.conf changed.

Closes-Bug: #1704900

Change-Id: Ie9babdf5ad0875b604cb1728a116b450e0f89858

ansible/roles/neutron/handlers/main.yml

@@ -234,6 +234,7 @@
     - service.host_in_groups | bool
     - config_json | changed
       or neutron_conf | changed
+      or neutron_lbaas_conf | changed
       or neutron_lbaas_agent_ini | changed
       or policy_json | changed
       or neutron_lbaas_agent_container | changed