Comment 13 for bug 1423250

I am seeing the same issue in Kilo Keystone, can we backport these changes to Kilo?

File "/tmp/jenkins-continuous_review-59/openstack/keystone/.venv/lib/python2.7/site-packages/eventlet/hubs/poll.py", line 115, in wait
    listener.cb(fileno)
  File "/tmp/jenkins-continuous_review-59/openstack/keystone/.venv/lib/python2.7/site-packages/eventlet/greenthread.py", line 214, in main
    result = function(*args, **kwargs)
  File "keystone/common/environment/eventlet_server.py", line 182, in _run
    debug=False)
  File "/tmp/jenkins-continuous_review-59/openstack/keystone/.venv/lib/python2.7/site-packages/eventlet/wsgi.py", line 842, in server
    pool.waitall()
  File "/tmp/jenkins-continuous_review-59/openstack/keystone/.venv/lib/python2.7/site-packages/eventlet/greenpool.py", line 117, in waitall
    "Calling waitall() from within one of the " \
AssertionError: Calling waitall() from within one of the GreenPool's greenthreads will never terminate.