celeryconfig:
celeryconfig:

Added `CELERY_ACKS_LATE = True` setting and added a comment to explain
the intention of CELERY_ACKS_LATE and CELERYD_PREFETCH_MULTIPLIER.


Former-commit-id: 0aa205671310129d5a8c951a08142683a48f9649 [formerly 0aa205671310129d5a8c951a08142683a48f9649 [formerly 3ef31da260888c1f73b7c5570defa2e15347ee3e]]
Former-commit-id: d8d1d1be703c362d0f64a7a85f2b8c0a6a8bae95
Former-commit-id: f496fa27e623c4142020423c9a22c93a43ecc999
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine