Make qa-schedules-subgroup-cleanup allow_failure:true
Why
Allowing failure for qa-schedules-subgroup-cleanup
job to unblock deployer pipelines.
Long term fix should be to implement retries in the delete-subgroups
method in QA::Tools::DeleteSubgroups
if issue can be recreated and tested locally.
Relates to gitlab-org/gitlab#199279 (closed)
Edited by Kyle Wiebers