Fail py27 job Message objects do not support str()

[Sergey Kraynev]

Fail on our gate job:
http://logs.openstack.org/07/222607/1/gate/gate-heat-python27/9333fc3/console.html

2015-09-11 15:50:54.656 | if [ "$START_AT" = "." ]; then for plugin in $START_AT/contrib/*; do ${PYTHON} -m subunit.run discover -s $plugin --list ; done; fi
2015-09-11 15:50:54.656 | --- import errors ---
2015-09-11 15:50:54.656 | Failed to import test module: heat.tests.autoscaling.test_scaling_group
2015-09-11 15:50:54.656 | Traceback (most recent call last):
2015-09-11 15:50:54.656 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 456, in _find_test_path
2015-09-11 15:50:54.656 | module = self._get_module_from_name(name)
2015-09-11 15:50:54.657 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 395, in _get_module_from_name
2015-09-11 15:50:54.657 | __import__(name)
2015-09-11 15:50:54.657 | File "heat/tests/autoscaling/test_scaling_group.py", line 28, in <module>
2015-09-11 15:50:54.657 | from heat.tests.nova import fakes as fakes_nova
2015-09-11 15:50:54.657 | File "heat/tests/nova/fakes.py", line 29, in <module>
2015-09-11 15:50:54.657 | Client = base_client.get_client_class(NOVACLIENT_VERSION)
2015-09-11 15:50:54.657 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/novaclient/client.py", line 784, in get_client_class
2015-09-11 15:50:54.657 | warnings.warn(_LW("'get_client_class' is deprecated. "
2015-09-11 15:50:54.657 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/lib/python2.7/warnings.py", line 29, in _show_warning
2015-09-11 15:50:54.657 | file.write(formatwarning(message, category, filename, lineno, line))
2015-09-11 15:50:54.657 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/lib/python2.7/warnings.py", line 38, in formatwarning
2015-09-11 15:50:54.658 | s = "%s:%s: %s: %s\n" % (filename, lineno, category.__name__, message)
2015-09-11 15:50:54.658 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/oslo_i18n/_message.py", line 223, in __str__
2015-09-11 15:50:54.658 | raise UnicodeError(msg)
2015-09-11 15:50:54.658 | UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.
2015-09-11 15:50:54.658 | Failed to import test module: rackspace.tests.test_rackspace_cloud_server
2015-09-11 15:50:54.658 | Traceback (most recent call last):
2015-09-11 15:50:54.658 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 456, in _find_test_path
2015-09-11 15:50:54.658 | module = self._get_module_from_name(name)
2015-09-11 15:50:54.658 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 395, in _get_module_from_name
2015-09-11 15:50:54.658 | __import__(name)
2015-09-11 15:50:54.659 | File "/home/jenkins/workspace/gate-heat-python27/contrib/rackspace/rackspace/tests/test_rackspace_cloud_server.py", line 28, in <module>
2015-09-11 15:50:54.659 | from heat.tests.nova import fakes
2015-09-11 15:50:54.659 | File "heat/tests/nova/fakes.py", line 29, in <module>
2015-09-11 15:50:54.659 | Client = base_client.get_client_class(NOVACLIENT_VERSION)
2015-09-11 15:50:54.659 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/novaclient/client.py", line 784, in get_client_class
2015-09-11 15:50:54.659 | warnings.warn(_LW("'get_client_class' is deprecated. "
2015-09-11 15:50:54.659 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/lib/python2.7/warnings.py", line 29, in _show_warning
2015-09-11 15:50:54.659 | file.write(formatwarning(message, category, filename, lineno, line))
2015-09-11 15:50:54.659 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/lib/python2.7/warnings.py", line 38, in formatwarning
2015-09-11 15:50:54.659 | s = "%s:%s: %s: %s\n" % (filename, lineno, category.__name__, message)
2015-09-11 15:50:54.659 | File "/home/jenkins/workspace/gate-heat-python27/.tox/py27/local/lib/python2.7/site-packages/oslo_i18n/_message.py", line 223, in __str__
2015-09-11 15:50:54.659 | raise UnicodeError(msg)
2015-09-11 15:50:54.660 | UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/222855

[Oleksii Chuprykov (ochuprykov)]

Seems the problem here https://github.com/openstack/python-novaclient/blob/master/novaclient/client.py#L784 . We shouldn't use _LW inside warnings.warn()

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/222855
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=8e1192172867cd7e6e946fb4d5e53658c24a1b09
Submitter: Jenkins
Branch: master

commit 8e1192172867cd7e6e946fb4d5e53658c24a1b09
Author: Oleksii Chuprykov <email address hidden>
Date: Sat Sep 12 11:01:00 2015 +0300

    Use Class method instead of deprecated method

    Nova get_client_class is deprecated now. Also we have
    problems with formatting deprecation messages.

    Change-Id: I7ff2533976dcba1bdabc1537ce444e886d2ff206
    Closes-Bug: #1494854