Updated openstack/openstack
Project: openstack/python-keystoneclient  84bafd604113fce995d7fb45ca93df168a499eb5
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Python 3: call functions from memcache_crypt.py with bytes as input

These functions expect bytes as input, but in Python 3 they were given text
strings.

Change-Id: I39fa15b8d5d56dc536e0bd71a50cf27da3d03046