mistralclient can't be imported from another openstack project

[Angus Salkeld]

mistralclient registers oslo logging config opts which conflict with other projects config opts.

  File "/home/angus/work/solum/solum/common/clients.py", line 17, in <module>
    from mistralclient.api import client as mistralclient
  File "/home/angus/work/python-mistralclient/mistralclient/api/client.py", line 21, in <module>
    from mistralclient.api import httpclient
  File "/home/angus/work/python-mistralclient/mistralclient/api/httpclient.py", line 19, in <module>
    from mistralclient.openstack.common import log as logging
  File "/home/angus/work/python-mistralclient/mistralclient/openstack/common/log.py", line 195, in <module>
    CONF.register_opts(log_opts)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line 1547, in __inner
    result = f(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line 1687, in register_opts
    self.register_opt(opt, group, clear_cache=False)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line 1551, in __inner
    return f(self, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line 1676, in register_opt
    if _is_opt_registered(self._opts, opt):
  File "/usr/local/lib/python2.7/dist-packages/oslo/config/cfg.py", line 516, in _is_opt_registered
    raise DuplicateOptError(opt.name)
DuplicateOptError: duplicate option: default_log_levels

I'd suggest not using oslo logging in the client, but base python logging if really needed.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/97162
Committed: https://git.openstack.org/cgit/stackforge/python-mistralclient/commit/?id=069f19e0b23f8cc0f45a58b963564c67a9a0ca4c
Submitter: Jenkins
Branch: master

commit 069f19e0b23f8cc0f45a58b963564c67a9a0ca4c
Author: Angus Salkeld <email address hidden>
Date: Mon Jun 2 19:48:57 2014 +1000

    Don't use oslo logging in the client

    Else this causes DuplicateOptError because both mistralclient
    and the project that imports mistralclient will have registered
    the logging options.

    Closes-bug: #1325478
    Change-Id: Id64fc61964d2f638be45bcf783275cb4d214aa2f