Enable release notes translation
Enable release notes translation

Releasenote translation publishing is being prepared. 'locale_dirs'
needs to be defined in conf.py to generate translated version of the
release notes.

Note that this repository might not get translated release notes - or
no translations at all - but we add the entry here nevertheless to
prepare for it.

Change-Id: Iec2b37e4cb673485b8d6c399ddb51d33b828f069

openstack/python-tackerclient,stackforge/python-tackerclient,stackforge/python-tackerclient,openstack/python-tackerclient