/usr/share/pyshared/nova/auth/ is in python-nova 2012.1-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/nova/auth/__init__.py
/usr/share/pyshared/nova/auth/dbdriver.py
/usr/share/pyshared/nova/auth/fakeldap.py
/usr/share/pyshared/nova/auth/ldapdriver.py
/usr/share/pyshared/nova/auth/manager.py
/usr/share/pyshared/nova/auth/nova_openldap.schema
/usr/share/pyshared/nova/auth/nova_sun.schema
/usr/share/pyshared/nova/auth/novarc.template
/usr/share/pyshared/nova/auth/opendj.sh
/usr/share/pyshared/nova/auth/openssh-lpk_openldap.schema
/usr/share/pyshared/nova/auth/openssh-lpk_sun.schema
/usr/share/pyshared/nova/auth/signer.py
/usr/share/pyshared/nova/auth/slap.sh