`nova --version` does not work on trunk

[Tim Miller]

Expected:
  `nova --version` should print a version number.

Actual:
  `nova --version` results in this error:

   Unknown, couldn't find versioninfo file at /usr/local/lib/python2.7/dist-packages/novaclient/versioninfo

Repro:
  git clone https://github.com/openstack/python-novaclient.git
  cd python-novaclient
  sudo pip install -r tools/pip-requires
  sudo pip install .
  nova --version

Affected Version:
  Trunk, at git SHA ea94b09ad712adcf932a4f217e4061522ad875d1

[Tim Miller (tim-miller-0)]

The following recently-landed commits seem relevant to this bug:

commit 0206c2d5dd37c3ce1440b5083574979129f12e77
Author: Monty Taylor <email address hidden>
Date: Thu Mar 28 06:34:53 2013 +0100

    Update to latest openstack.common.setup.

    We actually don't need the silly versioninfo file at all anymore.

    Change-Id: Ic759c39a29b07d41a96849db84a7f9990ec8a3eb

commit 23ee4b818d800d08abf123a65c69213c0eff0900
Author: Christoph Gysin <email address hidden>
Date: Wed Mar 27 20:39:09 2013 +0200

    setuptools: remove data_files section

    versioninfo is already included through include_package_data

    Change-Id: I53c28bd26a19d86704c918fa185cde9759140dc1

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/26310

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/26310
Committed: http://github.com/openstack/python-novaclient/commit/8ce233024700f70f23d26c5f68b0ffa445eccc32
Submitter: Jenkins
Branch: master

commit 8ce233024700f70f23d26c5f68b0ffa445eccc32
Author: Davanum Srinivas <email address hidden>
Date: Sat Apr 6 23:07:48 2013 -0400

    Fix problem with nova --version

    Update to latest openstack.common.version.py and fix __init__.py
    to get "nova --version" to work properly again

    Fixes LP# 1165325

    Change-Id: I29e54cd4cf79759407f3967518e9be575abd994a