fix: align tedge-log-plugin settings

[reubenmiller]

Proposed changes

Fix some inconsistencies with the tedge-log-plugin

• Use the mqtt client settings instead of the bind settings when creating the mqtt client
• Use DEBUG log level when starting the plugin with --debug (to align with other plugins)
• Build the mqtt client's session name using the plugin name, root and identifier topics to avoid conflicts between multiple tedge-log-plugin instances running as different child devices all on the same broker

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s)
• I ran cargo fmt as mentioned in CODING_GUIDELINES
• I used cargo clippy as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[codecov]

Codecov Report

Merging #2212 (d8e5443) into main (24b421f) will increase coverage by 0.0%.
The diff coverage is 0.0%.

Additional details and impacted files

Files Changed	Coverage Δ
.../tedge_config/src/tedge_config_cli/tedge_config.rs	89.2% <ø> (+1.2%)	⬆️
plugins/tedge_log_plugin/src/main.rs	0.0% <0.0%> (ø)

... and 4 files with indirect coverage changes

[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %	⏱️ Duration
261	0	5	261	100	46m11.925999999s

[didier-wenzek]

Approved.

Build the mqtt client's session name using the plugin name, root and identifier topics to avoid conflicts between multiple tedge-log-plugin instances running as different child devices all on the same broker

Indeed necessary