[10.0] [Tempest] end marker parameter doesn't work on container's listing

[Yury Tregubov]

Since about mos10 build #1530 the Tempest test test_list_container_contents_with_end_marker is failed on environments with ceph:

Traceback (most recent call last):
  File "tempest/api/object_storage/test_container_services.py", line 173, in test_list_container_contents_with_end_marker
    self.assertEqual(object_name, object_list.strip('\n'))
  File "/root/.rally/tempest/for-deployment-0d60156d-354d-4a6c-a29d-6f5ae3b4abc8/.venv/local/lib/python2.7/site-packages/testtools/testcase.py", line 411, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/root/.rally/tempest/for-deployment-0d60156d-354d-4a6c-a29d-6f5ae3b4abc8/.venv/local/lib/python2.7/site-packages/testtools/testcase.py", line 498, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: 'TestObject-582077720' != ''

Looks similar to http://tracker.ceph.com/issues/18977

Tempest log is attached.

Diagnostic snapshot is:

[Radoslaw Zarzynski (rzarzynski)]

Bug in upstream: http://tracker.ceph.com/issues/18977.