return node locations along with peering credentials

[ansuz]

Currently, if you search for a node by its location (continent, for example) it will return all nodes satisfying that constraint. That list can be very long, and individual nodes are returned with no indication of where they are within that large zone.

Nodes could be returned with an added location field, like so:

{
  "result": [
    {
      "185.125.216.67:24297": {
        "contact": "contact@bunjlabs.com",
        "login": "default-login",
        "password": "c5q2j63x5nkmt2yg2vjmlnfuh1jnjjf",
        "peerName": "h.bunjlabs.com",
        "publicKey": "5dkw4x4tczb6x164qklggbgfy35cs5uxjl6tyyu4slu7nm4062q0.k",
        "location": [
            "EU",
            "ru",
            "moscow"
        ]
      }
    }
  ]
}

[ansuz]

Implemented upstream in this commit