fix: checking for split brain #400

Job	Run time
Build images	6s
test (GODOG_FEATURE=active_nodes.feature make test)	2m 20s
test (GODOG_FEATURE=async.feature make test)	2m 21s
test (GODOG_FEATURE=cascade_replicas.feature make test)	2m 19s
test (GODOG_FEATURE=CLI.feature make test)	3m 7s
test (GODOG_FEATURE=crash_recovery.feature make test)	2m 26s
test (GODOG_FEATURE=events_reenable.feature make test)	2m 14s
test (GODOG_FEATURE=failover.feature make test)	2m 22s
test (GODOG_FEATURE=free_space.feature make test)	2m 33s
test (GODOG_FEATURE=host_discovery.feature make test)	2m 26s
test (GODOG_FEATURE=host_management.feature make test)	2m 17s
test (GODOG_FEATURE=maintenance.feature make test)	2m 19s
test (GODOG_FEATURE=offline_mode.feature make test)	2m 29s
test (GODOG_FEATURE=priority.feature make test)	2m 26s
test (GODOG_FEATURE=readonly_filesystem.feature make test)	2m 25s
test (GODOG_FEATURE=recovery.feature make test)	2m 28s
test (GODOG_FEATURE=repair.feature make test)	2m 28s
test (GODOG_FEATURE=statefile.feature make test)	2m 32s
test (GODOG_FEATURE=switchover_from.feature make test)	2m 20s
test (GODOG_FEATURE=switchover_to.feature make test)	2m 23s
test (GODOG_FEATURE=zk_failure.feature make test)	2m 17s
test (GODOG_FEATURE=zk_maintenance.feature make test)	2m 15s
	50m 53s

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