Add system debian pakcages status attachment (New)

[KaiChuan-Hsieh]

Add dpkg attachment for knowing system's debian packages status.

WARNING: This modifies com.canonical.certification::sru-server

https://certification.canonical.com/hardware/202504-36589/submission/428888/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.39%. Comparing base (cbdb66f) to head (4611bd5).
⚠️ Report is 119 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1934   +/-   ##
=======================================
  Coverage   50.39%   50.39%           
=======================================
  Files         384      384           
  Lines       41095    41095           
  Branches     6753     6753           
=======================================
  Hits        20709    20709           
  Misses      19644    19644           
  Partials      742      742           

Flag	Coverage Δ
provider-base	25.66% <ø> (ø)

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[KaiChuan-Hsieh]

Hello @pieqq ,

Could you review the change for me?

Thanks,

[pieqq]

@KaiChuan-Hsieh it looks OK, but could you run this on a device, upload the submission to C3 and add the link here just to make sure it works as expected?

[pieqq]

Thanks for this.

I was checking if dpkg -l could output to something a bit more machine-readable (like json), but it doesn't seem to be the case, so we'll use the usual output.

(the reason I checked is because we would like to expose more of these attachments in C3, and having a standard format like json makes it much easier to process)