Fix install_distro_packages() to return True when packages already installed

[disgoel]

Problem
The install_distro_packages() function returns False when all required packages are already installed. This causes ensure_tool() (introduced in #6272) to incorrectly raise a RuntimeError, even though the packages are available.

Root Cause
The function initializes result = False and only sets it to True when software_manager.install() is called. When all packages are already installed, the installation block is skipped, leaving result as False.

This bug was exposed when testing avocado-misc-tests PR #3087, which uses ensure_tool() on systems where packages are already installed. The tests fail with RuntimeError: Failed to install packages for perf even though perf is installed and functional.

[gemini-code-assist]

Code Review

This pull request updates the install_distro_packages function in avocado/utils/software_manager/distro_packages.py to return True if all required packages are already present, rather than only when new packages are installed. It also adds a log message to indicate when no installation is necessary. I have no feedback to provide as there were no review comments to evaluate.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.30%. Comparing base (48854e8) to head (f0863b7).
⚠️ Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
avocado/utils/software_manager/distro_packages.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6298      +/-   ##
==========================================
- Coverage   72.31%   72.30%   -0.01%     
==========================================
  Files         206      206              
  Lines       23258    23260       +2     
==========================================
  Hits        16818    16818              
- Misses       6440     6442       +2     

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[harvey0100]

LGTM. I tested this locally -- install_distro_packages() returns False when everything's already installed, which makes ensure_tool() blow up with a RuntimeError even though the packages are there. The fix handles it correctly.

Just a heads up, the RTD CI failure isn't from your change -- it's a pre-existing docstring issue on master from #6274 the fix for that has been merged. Could you please do a rebase and then this one should be good to go :)

[disgoel]

LGTM. I tested this locally -- install_distro_packages() returns False when everything's already installed, which makes ensure_tool() blow up with a RuntimeError even though the packages are there. The fix handles it correctly.

Just a heads up, the RTD CI failure isn't from your change -- it's a pre-existing docstring issue on master from #6274 the fix for that has been merged. Could you please do a rebase and then this one should be good to go :)

Thanks for the review. I have rebased the code and sent again.