/usr/lib/python2.7/dist-packages/provisioningserver/rpc/ is in python-maas-provisioningserver 1.5.4+bzr2294-0ubuntu1.2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/__init__.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/arguments.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/cluster.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/clusterservice.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/common.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/exceptions.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/interfaces.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/region.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/testing/
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/testing/__init__.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/testing/cluster.crt
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/testing/doubles.py
/usr/lib/python2.7/dist-packages/provisioningserver/rpc/testing/trust.crt