/usr/share/doc/python-ubuntu-sso-client.tests/changelog.Debian.gz is in python-ubuntu-sso-client.tests 13.10-0ubuntu6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/python-ubuntu-sso-client.tests/../python-ubuntu-sso-client/changelog.Debian.gz