Fix nil pointer crash when stale raft entries exist in cluster

Fix raft logs

Fix kronos status panic

Add randomized failure injection test

Apply Valid snapshot on restart

Update self node IP in gossip

Fix log depths

Fix bootstrapCmd return code

Fix zap log spam

Add api for bootstrap

Do not use seeds beyond Bootstrap

Add RU test

Add zap logger

Update certs_test.go default cipher suites test

Save snapshot before hardstate