genconfig doesn't work

[yuanying]

`tox -egenconfig` doesn't work

stacktrace is below.

    Traceback (most recent call last):
      File ".tox/genconfig/bin/oslo-config-generator", line 11, in <module>
        sys.exit(main())
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/oslo_config/generator.py", line 274, in main
        generate(conf)
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/oslo_config/generator.py", line 238, in generate
        for namespace, listing in _list_opts(conf.namespace):
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/oslo_config/generator.py", line 213, in _list_opts
        invoke_on_load=True)
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/stevedore/named.py", line 55, in __init__
        verify_requirements)
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/stevedore/extension.py", line 170, in _load_plugins
        self._on_load_failure_callback(self, ep, err)
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/stevedore/extension.py", line 162, in _load_plugins
        verify_requirements,
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/stevedore/named.py", line 123, in _load_one_plugin
        verify_requirements,
      File "/Users/yuanying/Projects/OpenStack/magnum/.tox/genconfig/lib/python2.7/site-packages/stevedore/extension.py", line 187, in _load_one_plugin
        obj = plugin(*invoke_args, **invoke_kwds)
      File "/Users/yuanying/Projects/OpenStack/magnum/magnum/opts.py", line 45, in list_opts
        ('database', magnum.db.sqlalchemy.models.sql_opts),
    AttributeError: 'module' object has no attribute 'sql_opts'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/219121

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/219121
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=8e9e893cac5a901ed02c957914446291a0c84134
Submitter: Jenkins
Branch: master

commit 8e9e893cac5a901ed02c957914446291a0c84134
Author: OTSUKA, Yuanying <email address hidden>
Date: Tue Sep 1 13:51:40 2015 +0900

    Fix missing sql_opts

    `tox -egenconfig` doesn't work, because
    `magnum.db.sqlalchemy.models.sql_opts` is moved to
    `magnum.db.sql_opts`.

    This fixes it.

    Change-Id: Ia617ee0ceae5bff7d745a9b48bfcdf9dfc00e336
    Closes-Bug: #1490817