Updated openstack/openstack
Project: openstack/python-keystoneclient  2a3af3f2155df1903109bb6a6b1f92c14ea12c1f
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Python3: webob.Response.body must be bytes

Remove duplicate assignement for 'resp.body'. Use bytes in Python3.

Change-Id: Ice1beb997ae401ebb87762e5499970409c63d801