T103839: mwext-Flow-qunit fails integration/slave-scripts/bin/mw-set-env-qunit.sh: No such file or directory was caused by Flow still triggering mwext-Flow-qunit although the repo has been migrated to mwext-qunit
We already have a job on +2 that verify jobs are populated. We also need a test to ensure jobs triggered by Zuul are still defined in JJB configuration file.