repack git repositories

Also, for an explanation of the window/depth values Jim Meyering suggested: http://gcc.gnu.org/ml/gcc/2007-12/msg00165.html

Because of the way we imported the trees from bzr, I think a one-time repack with "git repack -afd --window=250 --depth=250" is called for, and a monthly "git repack -afd" via cron after that.

The initial repack with the window size of 250 is complete. The version of git on the gerrit server is slightly old (1.7.4.1) and apparently doesn't compress as well as the version in oneiric (1.7.5.4), resulting in a new git repo size of 46M instead of 30M, but still a big improvement from 110M. Once the gerrit server is upgraded, the next repack should improve this further.

Fix proposed to branch: master
Review: https://review.openstack.org/5112

Reviewed: https://review.openstack.org/5112
Committed: http://github.com/openstack/openstack-ci-puppet/commit/5cd947a18c3e0cb6285fa19159c164b4588369bf
Submitter: Jenkins
Branch: master

commit 5cd947a18c3e0cb6285fa19159c164b4588369bf
Author: James E. Blair <email address hidden>
Date: Thu Mar 8 16:00:43 2012 -0800

    Repack git repos weekly.

    Early Sunday mornings, repack all the git repos in gerrit. This
    currently takes 41 seconds for all 32 repositories, so running
    it weekly doesn't seem too intensive.

    Fixes bug 943623.

    Change-Id: Iff0e999c27b428cd1170706e3dc7ede3a1a178a8