Feature #8862 : qosmngr/libqos: standard Linux support via tc+iptables
REQUIREMENT: Implementation of unified standard interface for applying qos configuration on all supported boards.
DESIGN CONSIDERATION: Use of standard linux interfaces like tc+iptables
IMPLEMENTATION: The existing /lib/qos/qos.sh has been leveraged to derive the parameters, required for tc commands from the "/etc/config/qos" uci file and vendor specific tmctl commands eliminated with linux tc commands.