We have random failures in fc26 and fc27.

The test should be marked as xfail until we fix it.

http://jenkins.ovirt.org/job/vdsm_master_check-patch-fc26-x86_64/2166/consoleFull

00:06:57.194 ======================================================================
00:06:57.195 FAIL: testWait(('sleep', '1'), ('sleep', '1'), True) (virttests.v2v_test.PipelineProcTests)
00:06:57.195 ----------------------------------------------------------------------
00:06:57.195 Traceback (most recent call last):
00:06:57.195   File "/home/jenkins/workspace/vdsm_master_check-patch-fc26-x86_64/vdsm/tests/testlib.py", line 143, in wrapper
00:06:57.196     return f(self, *args)
00:06:57.196   File "/home/jenkins/workspace/vdsm_master_check-patch-fc26-x86_64/vdsm/tests/virttests/v2v_test.py", line 605, in testWait
00:06:57.196     self.assertEqual(ret, waitRet)
00:06:57.197 AssertionError: False != True
00:06:57.197 -------------------- >> begin captured logging << --------------------
00:06:57.197 2017-11-23 11:48:07,229 DEBUG (MainThread) [root] /usr/bin/taskset --cpu-list 0-1 sleep 1 (cwd None) (v2v:1484)
00:06:57.197 2017-11-23 11:48:07,238 DEBUG (MainThread) [root] /usr/bin/taskset --cpu-list 0-1 sleep 1 (cwd None) (v2v:1484)
00:06:57.198 2017-11-23 11:48:09,248 DEBUG (MainThread) [root] Killing pid=22581 (v2v:749)
00:06:57.198 2017-11-23 11:48:09,248 DEBUG (MainThread) [root] Killing pid=22582 (v2v:749)
00:06:57.198 --------------------- >> end captured logging << ---------------------