Issue Description
Q: How does NE40NE80 configure QoS at VRP5 platform?
Handling Process
A: The QoS configured for VRP5 differs to that configured for VRP3 absolutely, with changes to commands mainly. According to traffic classifier, traffic behavior, and traffic policy, traffic-policy should be followed with a command as traffic-policy commit (the later version is changed to commit traffic policy) to activate the configurations. The command is not contained in Command Manual, so it is often ignored.
