Specify services to provide pure-ethernet-structure data

[kmohr-soprasteria]

air-interface data can be obtained from MWDI via the following operations:

        - operation-name: /core-model-1-4:network-control-domain=cache/control-construct={mount-name}/logical-termination-point={uuid}/layer-protocol={local-id}/pure-ethernet-structure-2-0:pure-ethernet-structure-pac/pure-ethernet-structure-capability
          uuid: mwdi-1-0-0-op-s-is-250
        - operation-name: /core-model-1-4:network-control-domain=cache/control-construct={mount-name}/logical-termination-point={uuid}/layer-protocol={local-id}/pure-ethernet-structure-2-0:pure-ethernet-structure-pac/pure-ethernet-structure-configuration
          uuid: mwdi-1-0-0-op-s-is-251
        - operation-name: /core-model-1-4:network-control-domain=cache/control-construct={mount-name}/logical-termination-point={uuid}/layer-protocol={local-id}/pure-ethernet-structure-2-0:pure-ethernet-structure-pac/pure-ethernet-structure-status
          uuid: mwdi-1-0-0-op-s-is-252
        - operation-name: /core-model-1-4:network-control-domain=cache/control-construct={mount-name}/logical-termination-point={uuid}/layer-protocol={local-id}/pure-ethernet-structure-2-0:pure-ethernet-structure-pac/pure-ethernet-structure-historical-performances
          uuid: mwdi-1-0-0-op-s-is-254

See overview.

• Please provide separate services for the different classes.
• Ensure that the returned data contains proper keys (also see #15)
  • note: the interface name indicates that this it delivers Ethernet data, but the configuration and counters correspond to link-based measurements; check inside the ControlConstructs, which keys can be delivered.