return labels as part of the profile list

[gianarb]

I use labels a lot and it will be nice to see them when selected the right profiles to merge (when I do a list in practice) in this way I can keep filtering until I get only the one I am looking for.

[narqo]

Could you show an example of what it's missing?

At least storage/badger returns the labels accociated with a profile with profiles list response:

$ curl -v 'http://localhost:10100/api/0/profiles?service=server&type=cpu&from=2019-03-13T09:00:00&to=2019-06-01T10:00:00' | jq .

{
  "code": 200,
  "body": [
    {
      "id": "bnnbo57budgsv59m02ag",
      "type": "cpu",
      "service": "server",
      "labels": [
        {
          "key": "dc",
          "value": "ams"
        },
        {
          "key": "host",
          "value": "ams-backend-1"
        }
      ],
      "created_at": "2019-03-13T10:49:58.0228644+01:00"
    },
    {
      "id": "bnnbna7budgsv59m02a0",
      "type": "cpu",
      "service": "server",
      "labels": [
        {
          "key": "dc",
          "value": "fra"
        },
        {
          "key": "host",
          "value": "backend-1"
        }
      ],
      "created_at": "2019-03-13T10:48:25.053972837+01:00"
    }
  ]
}