Fix junit report upload to Gitlab

8 jobs for junit in 18 minutes and 36 seconds (queued for 3 seconds)
Name Stage Failure
pycodegen-integration Test
=========================== short test summary info ============================
FAILED pygrandchem_tests/ - ValueError: Addi...
============= 1 failed, 8 passed, 344 warnings in 76.47s (0:01:16) =============
Uploading artifacts for failed job
Uploading artifacts...
pycodegen/*/report.xml: found 3 matching files and directories

Uploading artifacts as "junit" to coordinator... ok
id=523222 responseStatus=201 Created token=xLox2Ho1
Cleaning up file based variables
ERROR: Job failed: exit code 1