selftests: forwarding: Use OK instead of PASS in test output

It is easier to distinguish "[ OK ]" from "[FAIL]" than "[PASS]".
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Suggested-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/net/forwarding/lib.sh

@@ -211,7 +211,7 @@ log_test()
 		return 1
 	fi
 
-	printf "TEST: %-60s  [PASS]\n" "$test_name $opt_str"
+	printf "TEST: %-60s  [ OK ]\n" "$test_name $opt_str"
 	return 0
 }