Update i18n translation for neutron.notifiers log msg's

Validate that hacking rules apply to directories:
 - neutron/notifiers
 - neutron/openstack (this is already 'clean')

Change-Id: I37b8c45e20d2f59e4e9f5d80d5dc87f19a7a8b3a
Partial-bug: #1320867
Merge "Update i18n translation for neutron.notifiers log msg's"