Ignore RegisteredTimestamp in HasReplicationSetChangedWithoutStateAndAddress

Signed-off-by: Justin Jung <[email protected]>

Author: justinjung04

pkg/ring/replication_set.go

@@ -147,12 +147,13 @@ func HasReplicationSetChangedWithoutState(before, after ReplicationSet) bool {
 
 // HasReplicationSetChangedWithoutStateAndAddress returns false if two replications sets
 // are the same (with possibly different timestamps, instance states and address),
-// true if they differ in any other way (number of instances, tokens, zones, ...).
+// true if they differ in any other way (number of instances, tokens, or zones).
 func HasReplicationSetChangedWithoutStateAndAddress(before, after ReplicationSet) bool {
 	return hasReplicationSetChangedExcluding(before, after, func(i *InstanceDesc) {
 		i.Timestamp = 0
 		i.State = PENDING
 		i.Addr = ""
+		i.RegisteredTimestamp = 0
 	})
 }