[test][references] update the reference file names.

5 jobs for !2837 with cleanup/consistent-naming-in-test-references
latest detached
Status Name Job ID Coverage
  Trigger
passed full-dune-2.7-clang

passed full-dune-2.7-gcc

failed full-dune-master-gcc

passed minimal-dune-2.7-gcc

 
  Downstream Modules
skipped trigger lecture