Change the default logging level of agent to INFO (bugfix)

[Hook25]

This is done only if debug is not requested

Description

With INFO level logging, the Checkbox agent outputs a little bit more information about the test run. This is useful because, given that the agent runs as a systemd unit, this information contains some contextual clues as to what the machine is doing, greatly simplifying reading the debug logs.

Resolved issues

Fixes: https://warthogs.atlassian.net/browse/CHECKBOX-1971

Documentation

N/A

Tests

Tested it offline, it works

[codecov]

Codecov Report

❌ Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.60%. Comparing base (5285d8f) to head (f4a18cf).
⚠️ Report is 103 commits behind head on main.

Files with missing lines	Patch %	Lines
checkbox-ng/checkbox_ng/launcher/agent.py	25.00%	2 Missing and 1 partial ⚠️

❌ Your patch status has failed because the patch coverage (25.00%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2009      +/-   ##
==========================================
- Coverage   50.60%   50.60%   -0.01%     
==========================================
  Files         384      384              
  Lines       41180    41184       +4     
  Branches     7642     7643       +1     
==========================================
+ Hits        20841    20842       +1     
- Misses      19592    19594       +2     
- Partials      747      748       +1     

Flag	Coverage Δ
checkbox-ng	70.31% <25.00%> (-0.02%)	⬇️

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[fernando79513]

LGTM.
I think it makes sense to have the default logging level as INFO. I tested it locally and the output of the agent is more informative but still manageable.