Implement quirks v2 unique_id_suffix

[TheJulianJES]

DRAFT until zigpy bump is made and merged

Proposed change

This implements the quirks v2 unique_id_suffix that's appended to the existing unique_id of IEEE+endpoint+cluster (or something like that). So, it just replaces the default ZHA unique_id_suffix (which is the attribute name for v2 quirk entities by default)

This is needed when there are multiple quirks v2 entities for a specific attribute.
A test is also added that checks this for "write attr buttons" (writing the same attribute with different values).

Additional information

Corresponding zigpy PR:

• Add unique_id_suffix to quirks v2 zigpy#1541

Closes:

• Add additional unique ID suffix to v2 quirks #303

[TheJulianJES]

You mean that instead of appending the quirks v2 provided unique_id_suffix to the existing unique_id_suffix (created in the lines above), that we just replace it?
I guess that could work. The "attribute_name + extra suffix" is likely a bit unnecessary.

It would still be a suffix (to the original UID of IEEE +endpoint+cluster), so I'd keep the name the same probably and just change the implementation here. I don't think we should or even need to allow changing the whole UID (or the first part).

Changing just this suffix part to not append to the attr name should allow quirks v2 to take over ZHA/"v1" entities.

[TheJulianJES]

Changed the implementation to override the default attribute name unique_id_suffix for quirks v2 entities now, instead of appending it to the default.
This should allow us to replace ZHA/v1 entities from v2 quirks.

(Tests will fail until zigpy PR is merged + bump)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.58%. Comparing base (5e1cef1) to head (2c1473b).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #362   +/-   ##
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  Coverage   96.58%   96.58%           
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  Files          61       61           
  Lines        9512     9514    +2     
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+ Hits         9187     9189    +2     
  Misses        325      325           

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