Updated openstack/openstack
Project: openstack/python-keystoneclient  6ad5f2f4cc99b4d76cf0839cad09f9f8912d0542
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Avoid meaningless comparison that leads to a TypeError

The "requests" module tries to do this comparison in raise_for_status():

    400 <= self.status_code < 500

with "self.status_code" being "None". In Python2, it's a valid comparison, but
in Python3, it triggers a TypeError. We fix it by giving a valid default value
to "self.status_code".

Change-Id: I9ea9ecfb698546a7f6526464aa528441bb7c1ccd