[grid] Add log-level config option

[pujagani]

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Description

Add "log-level" config option that can be passed while running the server jar.

Motivation and Context

The default log level is INFO. If the server user wants to see logs at different level, then currently the only option is update the code. But since that might not be a feasible option for every user, a config flag that can be passed with the desired log-level is added. By default the log level defaults to INFO.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[sonarcloud]

SonarCloud Quality Gate failed.

0 Bugs
0 Vulnerabilities
1 Security Hotspot
0 Code Smells

0.0% Coverage
0.0% Duplication