SERVER-45997 Test re-sync cases where nodes can roll back majority committed writes

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• Closed

SERVER-32237 Nodes that cannot become primary must neither update progress nor vote "aye"

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• Closed

SERVER-18511 Report upstream progress when initial sync completes

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• Closed

SERVER-45995 Test that nodes in initial sync maintain and gossip the commit point

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• Closed

SERVER-19244 Secondary position information can be erroneous if nodes leave and rejoin a cluster with less data than before

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• Closed