/usr/lib/python2.7/dist-packages/keystone/token/ is in python-keystone 2:9.3.0-0ubuntu3.1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/keystone/token/__init__.py
/usr/lib/python2.7/dist-packages/keystone/token/_simple_cert.py
/usr/lib/python2.7/dist-packages/keystone/token/controllers.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/
/usr/lib/python2.7/dist-packages/keystone/token/persistence/__init__.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/backends/
/usr/lib/python2.7/dist-packages/keystone/token/persistence/backends/__init__.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/backends/kvs.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/backends/memcache.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/backends/memcache_pool.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/backends/sql.py
/usr/lib/python2.7/dist-packages/keystone/token/persistence/core.py
/usr/lib/python2.7/dist-packages/keystone/token/provider.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/
/usr/lib/python2.7/dist-packages/keystone/token/providers/__init__.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/fernet/
/usr/lib/python2.7/dist-packages/keystone/token/providers/fernet/__init__.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/fernet/core.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/fernet/token_formatters.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/fernet/utils.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/pki.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/pkiz.py
/usr/lib/python2.7/dist-packages/keystone/token/providers/uuid.py
/usr/lib/python2.7/dist-packages/keystone/token/routers.py
/usr/lib/python2.7/dist-packages/keystone/token/utils.py