Updated openstack/openstack
Project: openstack/glance  a62cdcefb0dcf98eb05ff1585e673d64cfc72b6f

Some v2 exceptions raise unicodeError

Use utils.exception_to_str to consistently cast the
excpetion to avoid the unicodeError stack trace.

Change-Id: I54fce91c73adca846ec99ed50a57b95d16428ec1
Closes-Bug: #1339775