MDB-32021: fix "Switchover is impossible now" #644

Job	Run time
behave (archive)	3m 15s
behave (async)	7m 12s
behave (autofailover)	16m 28s
behave (cascade)	21m 14s
behave (consecutive_switch)	9m 23s
behave (coordinator)	12m 3s
behave (coordinator_fail)	14m 46s
behave (dead_primary_switchover)	15m 8s
behave (disable_sync)	9m 32s
behave (failed_promote)	28m 31s
behave (failover_timeout)	37m 31s
behave (initialization)	4m 57s
behave (kill_non_ha_replica)	11m 41s
behave (kill_primary)	39m 52s
behave (kill_replica)	39m 16s
behave (maintenance)	18m 33s
behave (op_track)	4m 44s
behave (pgconsul_util)	19m 39s
behave (plugins)	5m 45s
behave (primary_switch)	5m 21s
behave (priority)	12m 59s
behave (reset_sync)	4m 47s
behave (single_node)	5m 18s
behave (slot)	4m 29s
behave (start)	6m 26s
behave (switchover)	42m 35s
behave (targeted_switchover)	14m 46s
	6h 56m 11s

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