Enhanced show binding and clear binding commands for DHCP local server and DHCP relay agent

The show binding and clear binding commands for extended DHCP local server and extended DHCP relay agent (including DHCPv6) have been enhanced to include additional options, which enable you to display or clear DHCP binding information by FPC, PIC, port, VLAN, and S-VLAN. The new options are supported on all underlying interfaces that support DHCP bindings.