Comment 5 for bug 1209406

gettext.install() was removed from cinder/__init__.py with this commit https://review.openstack.org/#/c/28543/2.
But this is needed for doc build with sphinx because the toplevel script is not any of the scripts under path "bin", but cinder/api/openstack/__init__.py. Without gettext.install() invoked in cinder/api/openstack/__init__.py, sphinx-build will fail and no docs on APIs can be generated. I thinks the cases are the same withe other components including nova, neutron, etc.