Device auto registration

[goliatone]

Implement endpoint for devices to auto-register.

• Provide endpoint
• First time, if device instance not present create one. Device Type should already exists.
• If payload provides UUID and device exists:
  • update status to online by deafault
  • if status provided, use that value

Endpoint:

• POST /devices/register/{deviceType}

{
    "uuid":"C00A59EA-D031-4BDC-8B2F-B77FA3BF975F",
    "name": "wee-5",
    "metadata": {
        "wlan0": "10.31.200.172"
    }
}

Service should return any configuration that we have for such device instance:

{
    "configuration":{
        "interval": 5000,
        "endpoint": "http://gateway.io/big-data/sensors",
        "keyid": "ABA0908543POADIFADSF"
    }
}

[goliatone]

Devices should register their status on boot as "booted" and then provide an endpoint to which we can schedule a health_check job that will update the status to either "online" or "offline".

The health check should be in a separated process, independent of menagerie.

The health check should only need a device's uuid and a way to update the DDBB directly to update instance status.

[goliatone]

Above all, we want a consistent way to id devices. Some devices already have a form of unique identification, say RPi serial number or ESP8266 chip id. It would be more logical to use that as an identifier. We should be able to specify what attribute we use in order to figure out if we do an update vs a create- currently we assume uuid.