/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/ is in python-oslo.messaging 4.6.1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/__init__.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/consumers/
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/consumers/__init__.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/consumers/zmq_consumer_base.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/consumers/zmq_pull_consumer.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/consumers/zmq_router_consumer.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/consumers/zmq_sub_consumer.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/zmq_incoming_message.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/server/zmq_server.py