PBR version lookup module incorrect in package

Importing the base package from pip crashes with:

>>> import keystoneclient_kerberos
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/jlennox/.virtualenvs/test/lib/python2.7/site-packages/keystoneclient_kerberos/__init__.py", line 20, in <module>
    'keystoneclient_kerberos').version_string()
  File "/home/jlennox/.virtualenvs/test/lib/python2.7/site-packages/pbr/version.py", line 78, in version_string
    for part in self.release_string().split('.'):
  File "/home/jlennox/.virtualenvs/test/lib/python2.7/site-packages/pbr/version.py", line 70, in release_string
    self.release = self._get_version_from_pkg_resources()
  File "/home/jlennox/.virtualenvs/test/lib/python2.7/site-packages/pbr/version.py", line 62, in _get_version_from_pkg_resources
    return packaging.get_version(self.package)
  File "/home/jlennox/.virtualenvs/test/lib/python2.7/site-packages/pbr/packaging.py", line 567, in get_version
    raise Exception("Versioning for this project requires either an sdist"
Exception: Versioning for this project requires either an sdist tarball, or access to an upstream git repository. Are you sure that git is installed?

This is because the PBR string is looking for PKG-INFO from "keystoneclient_kerberos" which is the module name and not the package name. Replacing this with "python-keystoneclient-kerberos" fixes the issue.

This would not have been noticed in development because it would fallback to looking at the git repo which has the correct version number.