Any output that uses labels in their template logic, will need to have the original labels available to set.  Either that, or we implement the same solution as Vitalii, and 'dedot and deslash' the template to match the filter?  (splunk output if I remember correctly).    

Current solution will be to add labels and namespace labels to the `._internal` context field/map.   Will Vitalii need to revert his logic?