Add interface names into NSM metrics

[dualBreath]

Task: networkservicemesh/sdk-vpp#768

Add interface details for NSC:

Depends on: networkservicemesh/sdk#1560

[dualBreath]

@NikitaSkrynnik @d-uzlov @denis-tingaikin @glazychev-art @VitalyGushin please review

[NikitaSkrynnik]

Seems like we don't need this PR. networkservicemesh/sdk#1572 is sufficient. We already have all interface names in path.

"path":{"path_segments":[
{"name":"alpine-43a1fd56-b916-45e9-b3ac-72e47f1d6321","id":"alpine-43a1fd56-b916-45e9-b3ac-72e47f1d6321-0", "metrics":{"client_interface":"KERNEL/nsm-1"}},

{"name":"nsmgr-7cnk4","id":"5f0a1fb7-2db2-44f6-982e-eff15f0ccfed"},

{"name":"forwarder-vpp-4pwq7","id":"4881a7ad-995c-442f-b5a0-f86c95f4d698", "metrics":{"client_interface":"VIRTIO/tap0", "server_interface":"VIRTIO/tap1"}},

{"name":"nse-kernel-658b86b75f-kvvfs","id":"d26c4b6f-9b2b-4d76-a071-8307b50e1dc1", "metrics":{"server_interface":"KERNEL/kernel2ker-4R1E"}}]}