/usr/share/tripleo-image-elements/neutron-dhcp-agent/element-deps is in python-tripleo-image-elements 0.7.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | neutron
neutron-openvswitch-agent
os-refresh-config
|