/usr/lib/python2.7/dist-packages/nova/CA/ is in python-nova 2012.1-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/nova/CA/.gitignore
/usr/lib/python2.7/dist-packages/nova/CA/geninter.sh
/usr/lib/python2.7/dist-packages/nova/CA/genrootca.sh
/usr/lib/python2.7/dist-packages/nova/CA/newcerts/
/usr/lib/python2.7/dist-packages/nova/CA/newcerts/.placeholder
/usr/lib/python2.7/dist-packages/nova/CA/openssl.cnf.tmpl
/usr/lib/python2.7/dist-packages/nova/CA/private/
/usr/lib/python2.7/dist-packages/nova/CA/private/.placeholder
/usr/lib/python2.7/dist-packages/nova/CA/projects/
/usr/lib/python2.7/dist-packages/nova/CA/projects/.gitignore
/usr/lib/python2.7/dist-packages/nova/CA/projects/.placeholder
/usr/lib/python2.7/dist-packages/nova/CA/reqs/
/usr/lib/python2.7/dist-packages/nova/CA/reqs/.gitignore
/usr/lib/python2.7/dist-packages/nova/CA/reqs/.placeholder