mock time in unit test
It's crashing now (sometimes):
_StringException: Traceback (most recent call last):
File "/build/python-swiftclient-2.6.0/tests/unit/test_service.py", line 1085, in test_upload_object_job_stream
self.assertAlmostEqual(mtime, expected_mtime, delta=0.5)
File "/usr/lib/python3/dist-packages/unittest2/case.py", line 883, in assertAlmostEqual
raise self.failureException(msg)
AssertionError: 1453224313.0 != 1453224312.4944572 within 0.5 delta
Change-Id: Ib2eeb13cd07febcb7c8b4e1435b885c4339093e4
0fe02eb1c0