Hi,
For info: we found that cloud-init-0.6.3-0.7.bzr532.el6 (from
epel-testing) stopped working after with the recently released
python-boto-2.5.1-1.el6. An upstream commit fixes the issue.
We opened
https://bugzilla.redhat.com/show_bug.cgi?id=838076
cheers, Jan