Return full path in list_dir/walk

[dolfinus]

Change Summary

Other methods, like upload_file, move_file and so on, return RemoteFile/RemoteDirectory with real path. But list_dir and walk return RemoteFile/RemoteDirectory containing only name, with no path. This requires using strange workarounds in FileDownloader/Mover code.

Fixed to keep all FileConnection methods consistent.

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

❌ Patch coverage is 96.77419% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 93.70%. Comparing base (929e13c) to head (8452c78).
⚠️ Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
...netl/connection/file_connection/file_connection.py	94.11%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #381      +/-   ##
===========================================
- Coverage    93.75%   93.70%   -0.05%     
===========================================
  Files          231      231              
  Lines        10212    10222      +10     
  Branches       984      985       +1     
===========================================
+ Hits          9574     9579       +5     
- Misses         489      491       +2     
- Partials       149      152       +3     

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