cockroachdb / cockroachdb/cockroach

raft: verify and enhance our Raft availability testing with leader leases

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A-kv-replication A-leader-leases C-enhancement T-kv
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Description

We need to make sure that our Raft availability testing tests cases where there is node/disk slowness, node crashes, and full/partial network partitions.

Moreover, we need to pay extra attention to the defortificaiton protocol, making sure it doesn't cause unavailability in corner cases.

Jira issue: CRDB-43727

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