Updated openstack/openstack
Project: openstack/nova  08ffe7c1ee46ce9c80f6bd1024e790cb8d0abbb8

Use six.text_type instead of unicode

According to 6683905b532b6030989064636aa5506d4cbe5b22 ,
we shouldn't use unicode in an exception message.

Change-Id: I377f0cf7b8a66026491b75e89b470a328670f17a