Reactivate the ack late configuration for the high priority tasks

It's needed to disable the prefeching of the tasks by the
workers. It can lead in situations where a task is prefetched by
a worker loading a big repo. The prefetch task will remain blocked
until the big repo loading is done.

Related to T3857

data/common/common.yaml

@@ -2385,6 +2385,7 @@ swh::deploy::worker::loader_high_priority::config:
   storage: "%{alias('swh::deploy::worker::storage::pipeline')}"
   max_content_size: "%{alias('swh::deploy::worker::loader::max_content_size')}"
   celery:
+    task_acks_late: true
     task_broker: "%{alias('swh::deploy::worker::task_broker')}"
     task_queues:
       # git

[Phabricator Migration user]

Some references in the commit message have been migrated:

• T3857 is now infra/sysadm-environment#3857