On host 1:

grep -r 'host=neutron-n' /etc/neutron/
/etc/neutron/neutron.conf:host=neutron-n-0

grep -r 'host = neutron-n' /etc/neutron/
/etc/neutron/dhcp_agent.ini:host = neutron-n-2
/etc/neutron/fwaas_driver.ini:host = neutron-n-2
/etc/neutron/l3_agent.ini:host = neutron-n-2
/etc/neutron/lbaas_agent.ini:host = neutron-n-2
/etc/neutron/metadata_agent.ini:host = neutron-n-2
/etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini:host = neutron-n-2