/usr/lib/python2.7/dist-packages/apiclient/creds.py is in python-maas-client 1.2+bzr1373+dfsg-0ubuntu1~12.04.6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/apiclient/../../../../share/pyshared/apiclient/creds.py