Add support to new fields in command_ack

src/modules/commander/commander.cpp

@@ -4135,8 +4135,13 @@ void answer_command(struct vehicle_command_s &cmd, unsigned result,
 	/* publish ACK */
 	vehicle_command_ack_s command_ack = {
 		.timestamp = 0,
+		.result_param2 = 0,
 		.command = cmd.command,
-		.result = (uint8_t)result
+		.result = (uint8_t)result,
+		.from_external = 0,
+		.result_param1 = 0,
+		.target_system = cmd.source_system,
+		.target_component = cmd.source_component
 	};
 
 	if (command_ack_pub != nullptr) {