Updated openstack/openstack
Project: openstack/python-swiftclient  ec538d37202c659c3702b499fc2f2ea962309746
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Add requests related unit-tests

This change improves unit tests of the new code added by the port to requests.
Raw upload and chunked upload in put_object are now covered.

Change-Id: I995b23a74bc4b00bf5761362b1f1405bb8662311