[TD-5838]<test> for testing nettools

tests/nettest/fqdn.sh

+#!/bin/bash
+
+taos -n fqdn

tests/nettest/tcpudp.sh

+#!/bin/bash
+
+
+for N in -1 0 1 10000 10001
+do
+	for l in 1023 1024 
+	do
+		for S in udp tcp 
+			do
+				taos -n speed -h BCC-2 -P 6030 -N $N -l $l -S $S 2>&1 | tee -a result.txt
+			done
+	done
+done