HPCC-31430 Update ESP instrumentation of http.request.method

[timothyklemm]

• Record the attribute in the HTTP server rather than in the binding. Prevents posted form requests, which are processed internally by the GET handler, from recording both POST and GET attributes values.
• Ensure the recorded attribute value conforms to the requirements specified at https://opentelemetry.io/docs/specs/semconv/attributes-registry/http.
• Record http.request.method_original when _OTHER applies.

Type of change:

• [x] This change is a bug fix (non-breaking change which fixes an issue).
• [ ] This change is a new feature (non-breaking change which adds functionality).
• [ ] This change improves the code (refactor or other change that does not change the functionality)
• [ ] This change fixes warnings (the fix does not alter the functionality or the generated code)
• [ ] This change is a breaking change (fix or feature that will cause existing behavior to change).
• [ ] This change alters the query API (existing queries will have to be recompiled)

Checklist:

• [x] My code follows the code style of this project.
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• [x] The commit message is properly formatted and free of typos.
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• [ ] The change has been fully tested:
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  • [ ] Scalability
  • [ ] Performance
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  • [ ] Existing deployed queries will not be broken
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• [x] There are no similar instances of the same problem that should be addressed
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• [ ] This is a user interface / front-end modification
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  • [ ] The component(s) render as expected

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Testing:

[github-actions[bot]]

Jira Issue: https://hpccsystems.atlassian.net//browse/HPCC-31430

Jirabot Action Result: Workflow Transition: Merge Pending Updated PR