Updated openstack/openstack
Project: openstack/ceilometer  4a638fab63c2a5a8a623c95337562f91b70f30a6
null
Refactor API error handling

Refactor the API error handling to ensure error messages are translated.
Since wsme 0.5b6, the error message doesn't need to be converted to
unicode, wsme handles it for us.

Related bug #1200518

Change-Id: Iec396f045cd3afe817301f0d00917c42c7587b55