test: update processing of packet log

Two new fields have been added to the packet log, which broke some
of the simulation tests.

test/simulation/test.common

@@ -391,9 +391,9 @@ check_packet_port() {
 	for i in $(seq 1 $(get_chronyd_nodes)); do
 		test_message 3 0 "node $i:"
 
-		grep -E -q "	$port	[0-9]+\$" tmp/log.packets && \
+		grep -E -q "^([0-9e.+-]+	){5}$port	" tmp/log.packets && \
 			! grep -E "^[0-9e.+-]+	$i	" tmp/log.packets | \
-			grep -E -q -v "	$port	[0-9]+\$" && \
+			grep -E -q -v "^([0-9e.+-]+	){5}$port	" && \
 			test_ok || test_bad
 		[ $? -eq 0 ] || ret=1
 	done