Updated openstack/openstack
Project: openstack/python-cinderclient  bd98d3264b87d6e8bab3175d24a3649aa41c24e6
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Import access module from keystoneclient to handle V3 endpoints

* service_catalog.py will be used only by nova(cinder.py), it will be removed if nova
uses access instead of service_catalog. Then service_catalog.py and
test_service_catalog.py will be removed from cinderclient if necessary.

* Some unit tests are modified.

* Because of JSON format's modification, functions that process cinder
credentials and cinder endpoints are changed.

* Add dependency for keystoneclient in requirements.txt.

Change-Id: Icf7badfdddcf5f55536d95db7242aff58aa34b6e
Closes-Bug: #1263876
bp: service-catalog