Rework some UniFi unique IDs

[Kane610]

Breaking change

Proposed change

First commit rework the unique Id of client tracker from using uses suffix to prefix.
Test coverage is part of the test_device_tracker.py-test_restoring_client

Second commit rework unique Id of poe and outlet switches from using midfix to prefix.
New test written.

After this all unique ids are either obj_id or prefix-obj_id

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
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• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

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• Documentation added/updated for www.home-assistant.io

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[frenck]

Thanks, @Kane610 👍

../Frenck

[Kane610]

Thanks @frenck 🎉

[disforw]

Should this be marked ‘breaking’ if you’re changing the unique id?

[frenck]

Should this be marked ‘breaking’ if you’re changing the unique id?

It has a migration for those, so it isn't breaking.