Comment 2 for bug 1568133

Reviewed: https://review.openstack.org/304547
Committed: https://git.openstack.org/cgit/openstack/rally/commit/?id=a26bc6b2c5b2b9083019292c126416a215391083
Submitter: Jenkins
Branch: master

commit a26bc6b2c5b2b9083019292c126416a215391083
Author: Yaroslav Lobankov <email address hidden>
Date: Tue Apr 12 14:30:47 2016 +0300

    [Verify] Fixing 'xfail' mechanism and whole test case failure issue

    If Tempest fails in a test's setUpClass(), the result that will be reported
    by Rally is "fail", even though the test is listed in a file passed to
    --xfails-file. So this commit fixes the issue.

    Also, this commit adds missing unittest for the subunit parser when we have
    a file with expected failures.

    Closes-Bug: #1568133

    Change-Id: I9e10891f02387b45a507a02326ecf81f0cb97bf3