DuplicateOptError: duplicate option: default_log_levels

[Davanum Srinivas (DIMS)]

Trying to use oslo.concurrency 0.1.0 in nova, running into this problem:
http://logs.openstack.org/70/130870/3/check/gate-nova-pep8/8ad1abf/console.html

2014-10-24 20:05:49.245 | /home/jenkins/workspace/gate-nova-pep8$ /home/jenkins/workspace/gate-nova-pep8/.tox/pep8/bin/flake8
2014-10-24 20:05:50.427 | Traceback (most recent call last):
2014-10-24 20:05:50.428 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/hacking/checks/imports.py", line 84, in is_module_for_sure
2014-10-24 20:05:50.428 | __import__(pack_name, fromlist=[mod_name])
2014-10-24 20:05:50.428 | File "/home/jenkins/workspace/gate-nova-pep8/nova/virt/driver.py", line 30, in <module>
2014-10-24 20:05:50.429 | from nova import utils
2014-10-24 20:05:50.429 | File "/home/jenkins/workspace/gate-nova-pep8/nova/utils.py", line 39, in <module>
2014-10-24 20:05:50.429 | from oslo.concurrency import lockutils
2014-10-24 20:05:50.429 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/concurrency/lockutils.py", line 33, in <module>
2014-10-24 20:05:50.430 | from oslo.concurrency.openstack.common import fileutils
2014-10-24 20:05:50.430 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/concurrency/openstack/common/fileutils.py", line 22, in <module>
2014-10-24 20:05:50.430 | from oslo.concurrency.openstack.common import log as logging
2014-10-24 20:05:50.430 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/concurrency/openstack/common/log.py", line 175, in <module>
2014-10-24 20:05:50.431 | CONF.register_opts(log_opts)
2014-10-24 20:05:50.431 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/config/cfg.py", line 1625, in __inner
2014-10-24 20:05:50.431 | result = f(self, *args, **kwargs)
2014-10-24 20:05:50.431 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/config/cfg.py", line 1765, in register_opts
2014-10-24 20:05:50.431 | self.register_opt(opt, group, clear_cache=False)
2014-10-24 20:05:50.432 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/config/cfg.py", line 1629, in __inner
2014-10-24 20:05:50.432 | return f(self, *args, **kwargs)
2014-10-24 20:05:50.432 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/config/cfg.py", line 1754, in register_opt
2014-10-24 20:05:50.432 | if _is_opt_registered(self._opts, opt):
2014-10-24 20:05:50.432 | File "/home/jenkins/workspace/gate-nova-pep8/.tox/pep8/local/lib/python2.7/site-packages/oslo/config/cfg.py", line 561, in _is_opt_registered
2014-10-24 20:05:50.433 | raise DuplicateOptError(opt.name)
2014-10-24 20:05:50.433 | DuplicateOptError: duplicate option: default_log_levels

[Davanum Srinivas (DIMS) (dims-v)]

Both the following files, have the same exact option definition 'default_log_levels'

nova/nova/openstack/common/log.py
oslo.concurrency/oslo/concurrency/openstack/common/log.py

[Doug Hellmann (doug-hellmann)]

Incubator change: https://review.openstack.org/#/c/130892/

oslo.concurrency change: https://review.openstack.org/#/c/130893/