[branch NCS-1.0_candidate] "training/example/sample_test.sh" using "_rec_after_dbf" which is not included in the standard JSON for the moment.

Problem

"training/example/sample_test.sh" asks for the component "rec_after_dbf_Y" when calling "training/example/create_unified_dataset.py" for the first time. However, "_rec_after_dbf" is not included in the standard JSON for the moment. It is a small issue as "training/example/sample_test.sh" is supposed to be run as it is, only modifying LISTDIR_BS (and potentially LOG_EXT).