Epipe global commands for 7210 SAS-Dxp

config
    - service
        - epipe service-id [customer customer-id] [create] [vpn vpn-id] [svc-sap-type {null-star | dot1q | dot1q-preserve | any | dot1q-range | qinq-inner-tag-preserve}] [customer-vid vlan-id] [uplink-type {l2 | mpls}]
        - no epipe service-id
            - description description-string
            - no description
            - sap sap-id [create]
            - no sap sap-id 
            - service-name service-name
            - no service-name 
            - [no] shutdown