copy message key from consumed to produced record

Signed-off-by: Sebastian Schüpbach <sebastian.schuepbach@unibas.ch>
3 jobs for master in 4 minutes and 15 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed test #62772
mbr

00:01:45

passed test-chart #62773
mbr

00:00:12

 
  Publish
passed build-latest-image #62774
mbr

00:02:29