Workaround for eventlet bug with unit tests in RHEL6.1.
Workaround for eventlet bug with unit tests in RHEL6.1.

This adds a patch to fix the broken eventlet code that's installed in the
virtualenv.

Fixes bug 884915

Change-Id: I6dbf755abbc5a52208de3dd892257ce39686d396

hyakuhei/cleantox,zancas/hacking,hyakuhei/cleantox,emonty/oslo-hacking,emonty/oslo-hacking,openstack-dev/hacking,zancas/hacking,openstack-dev/hacking