exclude xenapi plugins from pep8/hacking checks

[Dan Prince]

The Xenapi plugins are currently written in Python 2.4. As such they do not satisfy all of our pep8 checks.

Lets just exclude them for now. These plugins arguably shouldn't be in Nova's code base anyway.

[Dan Prince (dan-prince)]

The offending file is 'glance' plugin which makes use of md5.

tools/hacking.py:122: DeprecationWarning: the md5 module is deprecated; use hashlib instead
  __import__(mod, globals(), locals(), [], -1)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/6708

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/6708
Committed: http://github.com/openstack/nova/commit/2b490fd2ef3a74402147893be646c00505da8628
Submitter: Jenkins
Branch: master

commit 2b490fd2ef3a74402147893be646c00505da8628
Author: Dan Prince <email address hidden>
Date: Sun Apr 22 21:11:03 2012 -0400

    Exclude xenapi plugins from pep8/hacking checks.

    Fixes LP Bug #987055.

    Change-Id: I7132b88c5e0a90b16d0f8e35df45b82e7991280f