Nhat Nguyen 864e9d875d Bubble up exception in follow task in ccr tests (#52085)
It's perfectly fine if a bulk request on the follower hits 
IndexShardClosedException in some CCR tests because we sometimes 
close some follower shards while the follow-task is replicating operations.
Instead of failing the test immediately, this commit bubbles up that
failure to the shard follow task.

Closes #52052
2020-02-10 08:27:04 -05:00
..