LLT-5866: Remove app_user_uid from the config.

[tomasz-grz]

Problem

Currently app_user_id used for notification center is part of the user provided config for teliod. It shouldn’t be user configurable, we can reuse the the meshnet hardware_id for it instead which should be generated when the device is registered.

Solution

Remove app_user_uid from the user config.
Use a randomly generated UUID instead of the public key for hw_identifier.
Use the hw_identifier as app_user_uid in notification center.

☑️ Definition of Done checklist

• Commit history is clean (requirements)
• README.md is updated
• Functionality is covered by unit or integration tests

[matislovas]

+1

[Hasan6979]

What is the difference between app_user_id and hw_identifier ?
From what I understand is that, one is more device specific, and the other is user specific right ? 1 user can have many devices.

[tomasz-grz]

@Hasan6979 One is used to identify the device on meshnet, and the other to identify the device for MQTT subscriptions.

The parameter app_user_uid has to be an identifier that is unique per device and user. Meaning that it should be different for the same user on different device.

[Hasan6979]

+1

[packgron]

+1.0