Comment 4 for bug 1309092

and in keystoneclient==0.7.1

https://github.com/openstack/python-keystoneclient/blob/0.7.1/keystoneclient/middleware/auth_token.py#L419

    self.request_uri = '%s://%s:%s' % (auth_protocol, auth_host, auth_port)
    ...
    self.auth_uri = self.request_uri

there is no check for schema