Unexpected error when start heat-api service

[Sergey Kraynev]

If you try to launch heat-api with some incorrect environment you may get such error:

skr@ubuntu:~/heat$ ./bin/heat-api

.....

2014-09-01 09:39:18.223 CRITICAL heat [-] UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.

2014-09-01 09:39:18.223 TRACE heat Traceback (most recent call last):
2014-09-01 09:39:18.223 TRACE heat File "./bin/heat-api", line 64, in <module>
2014-09-01 09:39:18.223 TRACE heat sys.exit("ERROR: %s" % e)
2014-09-01 09:39:18.223 TRACE heat File "/home/skr/heat/heat/openstack/common/gettextutils.py", line 333, in __str__
2014-09-01 09:39:18.223 TRACE heat raise UnicodeError(msg)
2014-09-01 09:39:18.223 TRACE heat UnicodeError: Message objects do not support str() because they may contain non-ascii characters. Please use unicode() or translate() instead.
2014-09-01 09:39:18.223 TRACE heat

The correct Error message should be displayed anyway.

Correct Error message if to add translating:

skr@ubuntu:~/heat$ ./bin/heat-api

...

ERROR: Unable to load heat-api from configuration file /etc/heat/api-paste.ini.
Got: ImportError('No module named keystonemiddleware.auth_token',)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/118168

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/118168
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=8faef30895d5b3550d50672fc454acc37992008a
Submitter: Jenkins
Branch: master

commit 8faef30895d5b3550d50672fc454acc37992008a
Author: Sergey Kraynev <email address hidden>
Date: Mon Sep 1 09:57:12 2014 -0400

    Improve error handling in api files

    Change-Id: Ib9dccf5641d72aa5d16ad3179d0df030c7664fa6
    Closes-Bug: #1364018