N802 rule has limit of 72 characters but prints 50 as limit

[Steven Dake]

The N082 rule checks for 72 characters as the maximum summary length, however, the pep output indicates the commit summary should be less then 50 characters. At some point, I expect someone modified the code to match the workflow via jenkins rather then the typical git mailing list approach of mailing a message to a mailing list.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/23440

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/23440
Committed: http://github.com/openstack/nova/commit/4ac268a4b620eecc4af1f4ffdc0a836d7260d126
Submitter: Jenkins
Branch: master

commit 4ac268a4b620eecc4af1f4ffdc0a836d7260d126
Author: Steven Dake <email address hidden>
Date: Mon Mar 4 10:31:10 2013 -0700

    docs should indicate proper git commit limit

    The nova gate should recommend 50 characters or less for a git commit
    but actually enforce 72 characters.

    This patch changes the hacking.rst docs to indicate the actual limit
    is 72 characters rather then 50 characters.

    Change-Id: I47f1f1f1007f5744bf1fef419df7e033803b4a53
    Fixes: Bug #1144840