psstest: add pubkey in message

cmd/pssTest/psstest.go

@@ -53,7 +53,7 @@ func main() {
 	for {
 		fmt.Printf("-> Sending %s pss to [%s]\n", kind, key)
 		currentTime := int64(time.Now().Unix())
-		err := sn.PssPub(kind, key, topic, fmt.Sprintf("Hello world from %s at %d", hostname, currentTime), "")
+		err := sn.PssPub(kind, key, topic, fmt.Sprintf("Hello I am %s, time is %d, my pubKey is %s", hostname, currentTime, sn.PssPubKey), "")
 		log.Info("pss sent", "err", err)
 		time.Sleep(10 * time.Second)
 	}