Updated openstack/openstack
Project: openstack/python-keystoneclient  408825882af549a8d43685942d1c564b93c43432
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Remove support for old Swift memcache interface.

Since this has  been removed since a year, it's time to clean this up.

Change-Id: I6681a31f675f2178285dadea876af1fdb7a8a4c3