[loop] Add written to processor output name to evaluator write parameters

This allows the evaluator to properly write to its own
output as the method is called each time a processor
output is written to.

Fixes #27
4 jobs for 27_improve_synchronized_output_handling in 5 minutes and 33 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #174998
docker
build_linux_36

00:05:24

73.0%
passed #174999
docker
build_linux_37

00:05:33

73.0%
passed #174996
macosx
build_macosx_36

00:04:10

73.0%
passed #174997
macosx
build_macosx_37

00:04:09

73.0%