fix Generar correctamente el CSV de todas las valoraciones

Tener en cuenta que hay programas (PIEC, PIPOUZ) que no tienen líneas.
1 job from master in 0 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #571
test

00:00

 
Name Stage Failure
failed
test Test
Running with gitlab-runner 12.9.0 (4c96e5ad)
on estudiosformacion 96c517a5
Preparing the "shell" executor
Using Shell executor...
Preparing environment
Running on estudiosformacion...
Uploading artifacts for failed job
ERROR: Job failed: exit status 1