Tianlun Li e7ae9ae596 Deprecate delaying state recovery for master nodes ()
It is useful to be able to delay state recovery until enough data nodes have
joined the cluster, since this gives the shard allocator a decent opportunity
to re-use as much existing data as possible. However we also have the option to
delay state recovery until a certain number of master-eligible nodes have
joined, and this is unnecessary: we require a majority of master-eligible nodes
for state recovery, and there is no advantage in waiting for more.

This commit deprecates the unnecessary settings in preparation for their
removal.

Relates 
2020-03-18 10:04:22 +00:00
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