Force store device with apikey for legacy cases without apikey defined at device level

[AlvaroVega]

Component

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Is your feature request related to a problem? Please describe

SInce some times ago we encourage to store an apikey with a device, typically the same than group.
But some time ago we still allow use a device with different apikeys (promiscuity case).
These legacy case should force to use just one apikey, storing one provided with measure.

Describe the solution you'd like

Legacy cases about devices without an apikey should store apikey provided with measure

Describe alternatives you've considered

No response

The systemd version you checked that didn't have the feature you are asking for

No response

[AlvaroVega]

When a measure arrives, if device has a empty apikey then group apikey is stored in device

https://github.com/telefonicaid/iotagent-node-lib/blob/69bb271393898b548c83a1ee55e9ee3229cc0752/lib/services/devices/deviceService.js#L624C1-L630C14

So maybe we just need to check it with some tests