VPLS SAP statistics commands

config
    - service
        - vpls service-id [customer customer-id] [create] [vpn vpn-id] [m-vpls] [svc-sap-type {null-star | dot1q-preserve | any}] [b-vpls | i-vpls | r-vpls] [b-vid vid]
        - vpls service-id [customer customer-id] [create] [vpn vpn-id] [m-vpls] [svc-sap-type {null-star | dot1q-preserve | dot1q-range | any}] [customer-vid vlan-id]
        - no vpls service-id
            - sap sap-id [split-horizon-group group-name] [g8032-shg-enable] [eth-ring ring-index] [create]
            - no sap sap-id 
                - statistics
                    - ingress
                        - counter-mode {in-out-profile-count | forward-drop-count}
                        - [no] drop-count-extra-vlan-tag-pkts