Add Tribe member's address to tags

[jakewarr8]

Add ability to see Tribe member's address in REST API.

{
  "host1": {
    "name": "host1",
    "plugin_agreement": "",
    "tags": {
      "host": "10.0.1.15",
      "rest_api_port": "8181",
      "rest_insecure": "true",
      "rest_proto": "http"
    },
    "task_agreements": null,
    "Err": null
  }
}

[IRCody]

Closing this as #1299 was merged.