Include image information in Checkbox submission (New)

[Hook25]

Description

New job in pc-saity called com.canonical.certification::info/image-url calls bash script called get-image-url.sh. Probably needs some work to port it to the system_information section of the submission file.

This creates a new system_information collector that collects the URL if possible (namely, if ubuntu-report is installed on the machine and if the dcd string is there and valid). This safely fails in unexpected situations reporting the error. This also stores (in the stderr of the collector) the full report non-destructively, so in any situation we can go back and re-interpret the data

Resolved issues

Fixes: https://warthogs.atlassian.net/browse/CHECKBOX-1541

Documentation

N/A

Tests

This also adds appropriate unit tests

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 46.13%. Comparing base (d7d5c8c) to head (ea753b3).
Report is 110 commits behind head on main.

Files with missing lines	Patch %	Lines
...box-ng/plainbox/impl/session/system_information.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1460   +/-   ##
=======================================
  Coverage   46.13%   46.13%           
=======================================
  Files         367      367           
  Lines       39206    39210    +4     
  Branches     6633     6633           
=======================================
+ Hits        18088    18091    +3     
- Misses      20421    20422    +1     
  Partials      697      697           

Flag	Coverage Δ
checkbox-ng	68.13% <75.00%> (+<0.01%)	⬆️

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[pieqq]

Looks good to me!

Does it mean we can remove the get-image-url.sh script and associated job in the sanity provider?

[Hook25]

I wouldn't remove it for now, as that will disrupt them and this is intended to collect the information and not give immediate feedback to the user (as in, it wont fail publicly in the log, prompting you to maybe update the string and rerun it), so it may not fit their purpose