py33: global name 'xrange' is not defined

[Kui Shi]

 22 ======================================================================
 23 FAIL: tests.test_multithreading.TestQueueFunctionManager.test_context_manager_without_error_counter
 24 tags: worker-7
 25 ----------------------------------------------------------------------
 26 Traceback (most recent call last):
 27 File "/opt/osd/python-swiftclient/tests/test_multithreading.py", line 141, in test_context_manager_without_err
    or_counter
 28 with self.qfq as input_queue:
 29 File "/opt/osd/python-swiftclient/swiftclient/multithreading.py", line 139, in __enter__
 30 for _junk in xrange(self.thread_count):
 31 NameError: global name 'xrange' is not defined

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/50782

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/62850

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/62850
Committed: https://git.openstack.org/cgit/openstack/python-swiftclient/commit/?id=a1cf366a0b57050da05b3abde8a18bf5eee6ee32
Submitter: Jenkins
Branch: master

commit a1cf366a0b57050da05b3abde8a18bf5eee6ee32
Author: Wu Wenxiang <[e-mail]>
Date: Wed Dec 18 19:33:58 2013 +0800

    Replace xrange in for loop with range

    xrange is not supported in python 3, so replace it with range since no
    large size lists involved.

    Closes-Bug: #1237717

    Change-Id: I4e5e0782153d32c8beee03f7d871722ed4352859