/usr/lib/python3/dist-packages/provisioningserver/pserv_services/ is in python3-maas-provisioningserver 2.0.0~beta3+bzr4941-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/__init__.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/dhcp_probe_service.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/image.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/image_download_service.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/lease_socket_service.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/networks_monitoring_service.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/node_power_monitor_service.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/service_monitor_service.py
/usr/lib/python3/dist-packages/provisioningserver/pserv_services/tftp.py