Add `lhcb-master-ref` slot explicitly to test schedule
LbNightlyTools!310 (merged) broke the automatic GitLab replies for ci-tests because it removed the lhcb-master-ref
slots from the list of slots for which to run the throughput tests.
Previously this slot was included via the lhcb-master
slot which was interpreted as lhcb-master*
.
This MR simply add lhcb-master-ref
explicitly to the test schedule.
Thanks to @maszyman for diagnosing the problem