REST API errors are not being translated on response

[Luis A. Garcia]

REST API response errors are not being translated after re-enabling the lazy translation feature.

For example doing:
GET http://ceilometer:8777/v2/resources/1
GET http://ceilometer:8777/v2/alarms/1
Accept-Language: [some non-default locale]

Which should return a translated response, but it does not.

The reason is that the lazy _() function is installed with gettextutils.install() but it's then overriden by re-importing it in some modules.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/78063

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/70824
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=66e10a6c88b2e3807122b01df77b89b27e5caeb3
Submitter: Jenkins
Branch: master

commit 66e10a6c88b2e3807122b01df77b89b27e5caeb3
Author: Luis A. Garcia <email address hidden>
Date: Thu Mar 6 14:23:32 2014 -0700

    Install global lazy _()

    The patch installs the lazy _() function, which returns translatable
    Message objects, globally via the enable_lazy() method such that
    translation works in all modules.

    Since Messages objects can't be str()'d and native exceptions str()
    their messages the patch also removes passing Messages to native
    exceptions.

    Change-Id: I8a4ecd904e393c4bd0308cdeafa3cf1d8f0e70fe
    Closes-Bug: #1275901