Looks like another failing test on CI.

20:01:00 ERROR: test_detect_slow_client(False) (protocoldetectorTests.AcceptorTests)
20:01:00 ----------------------------------------------------------------------
20:01:00 Traceback (most recent call last):
20:01:00   File "/home/jenkins/workspace/vdsm_master_check-patch-fc24-x86_64/vdsm/tests/protocoldetectorTests.py", line 113, in tearDown
20:01:00     self.acceptor.stop()
20:01:00   File "/home/jenkins/workspace/vdsm_master_check-patch-fc24-x86_64/vdsm/lib/vdsm/protocoldetector.py", line 211, in stop
20:01:00     self._acceptor.close()
20:01:00   File "/usr/lib64/python2.7/asyncore.py", line 407, in close
20:01:00     self.del_channel()
20:01:00   File "/home/jenkins/workspace/vdsm_master_check-patch-fc24-x86_64/vdsm/lib/yajsonrpc/betterAsyncore.py", line 137, in del_channel
20:01:00     asyncore.dispatcher.del_channel(self, map)
20:01:00   File "/usr/lib64/python2.7/asyncore.py", line 292, in del_channel
20:01:00     del map[fd]
20:01:00 KeyError: 63