Updated openstack/openstack
Project: openstack/nova  434088dfc4a6ec765bf1f1eb8e41edd7d412ca76

add repr for event objects

When an event object gets dumped in a stack trace, because there
is no __repr__ of it, we don't get any details about what it was.
Add a __repr__ to all the event objects so that we can get this
information on a fail.

Change-Id: I9a62a4348871b748c53b7354ad1b821fe987127d