Fix race condition in tests

Tests were trying to write to the same output files, which sometimes causes corruptions and failures in the validators.

added lhcb-gaudi-head lhcb-head labels

added testing label

approved this merge request

Let me approve this and trigger a CI test as it all seems a no-brainer (better in general to assign reviewers and labels.)

assigned to @erodrigu

/ci-test

added ci-test-triggered label

• [2022-03-21 16:25] Validation started with lhcb-master-mr#4039
• [2022-03-22 00:10] Validation started with lhcb-gaudi-head#3194
• [2022-03-22 00:29] Validation started with lhcb-head#3216

approved this merge request

resolved all threads

merged

mentioned in commit 1917e900

mentioned in merge request !672 (merged)