Sync up serialization EventInterval sorting with monitorapi.Interval sorting

Author: dgoodwin

pkg/monitor/serialization/serialize.go

@@ -178,8 +178,16 @@ func (intervals byTime) Less(i, j int) bool {
 	case d > 0:
 		return false
 	}
-	return intervals[i].Locator < intervals[j].Locator
+
+	switch d := intervals[i].To.Sub(intervals[j].To.Time); {
+	case d < 0:
+		return true
+	case d > 0:
+		return false
+	}
+	return intervals[i].Message < intervals[j].Message
 }
+
 func (intervals byTime) Len() int { return len(intervals) }
 func (intervals byTime) Swap(i, j int) {
 	intervals[i], intervals[j] = intervals[j], intervals[i]