Unintended assignment of "syslog"

[Ivan Berezovskiy]

Upstream bug: https://bugs.launchpad.net/oslo.log/+bug/1499620

We've faced this bug on our BVT: https://product-ci.infra.mirantis.net/job/8.0.all/84/downstreambuildview/
Problem is here that neutron-server service can't start because of following error:

Traceback (most recent call last):
  File "/usr/bin/neutron-server", line 10, in <module>
    sys.exit(main_wsgi_eventlet())
  File "/usr/lib/python2.7/dist-packages/neutron/cmd/eventlet/server/__init__.py", line 19, in main_wsgi_eventlet
    wsgi_eventlet.main()
  File "/usr/lib/python2.7/dist-packages/neutron/server/wsgi_eventlet.py", line 51, in main
    server.boot_server(_eventlet_wsgi_server)
  File "/usr/lib/python2.7/dist-packages/neutron/server/__init__.py", line 35, in boot_server
    server_func()
  File "/usr/lib/python2.7/dist-packages/neutron/server/wsgi_eventlet.py", line 28, in _eventlet_wsgi_server
    neutron_api = service.serve_wsgi(service.NeutronApiService)
  File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 106, in serve_wsgi
    LOG.exception(_LE('Unrecoverable error: please check log '
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
    six.reraise(self.type_, self.value, self.tb)
  File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 102, in serve_wsgi
    service = cls.create()
  File "/usr/lib/python2.7/dist-packages/neutron/service.py", line 94, in create
    config.setup_logging()
  File "/usr/lib/python2.7/dist-packages/neutron/common/config.py", line 214, in setup_logging
    logging.setup(cfg.CONF, product_name)
  File "/usr/lib/python2.7/dist-packages/oslo_log/log.py", line 246, in setup
    _setup_logging_from_conf(conf, product_name, version)
  File "/usr/lib/python2.7/dist-packages/oslo_log/log.py", line 337, in _setup_logging_from_conf
    facility = _find_facility(conf.syslog_log_facility)
  File "/usr/lib/python2.7/dist-packages/oslo_log/log.py", line 302, in _find_facility
    for fac in valid_facilities))
TypeError: syslog facility must be one of:

We need to backport fix for upstream oslo.log bug: https://bugs.launchpad.net/oslo.log/+bug/1499620
Patch for this bug is https://review.openstack.org/#/c/235954/1

[Ivan Berezovskiy (iberezovskiy)]

Upstream patch should come from upstream with merge commit: https://review.fuel-infra.org/#/c/13228/

[Ivan Berezovskiy (iberezovskiy)]

BVT are green https://product-ci.infra.mirantis.net/job/8.0.ubuntu.bvt_2/82/

[Aleksei Stepanov (penguinolog)]

Not reproduced on fuel-8.0-518-2016-02-03_07-53-27.iso