feat: standardize Nginx Log Format for Datadog Integration

[nadeemshahzad]

This PR standardizes the Nginx log format to ensure seamless integration with Datadog. By unifying the log structure, Datadog can more accurately collect and process log data, ensuring key attributes are properly extracted

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Make sure that the following steps are done before merging:

• Have a Site Reliability Engineer review the PR if you don't own all of the services impacted.
• If you are adding any new default values that need to be overridden when this change goes live, update internal repos and add an entry to the top of the CHANGELOG.
• Performed the appropriate testing.