Support opensearch-go tracing

[keisku]

What does this PR do?

Support opensearch-project/opensearch-go by manual / orchestrion instrumentation.
Tested OpenSearch v2 only because of Release Schedule and Maintenance Policy.

• The maintenance window of OpenSearch v1 will end April 29th, 2025.
• OpenSearch v3 is still not GA.

Motivation

#2186

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• System-Tests covering this feature have been added and enabled with the va.b.c-dev version tag.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.
• Add an appropriate team label so this PR gets put in the right place for the release notes.
• Non-trivial go.mod changes, e.g. adding new modules, are reviewed by @DataDog/dd-trace-go-guild.
• For internal contributors, a matching PR should be created to the v2-dev branch and reviewed by @DataDog/apm-go.

Unsure? Have a question? Request a review!

[datadog-datadog-prod-us1]

Datadog Report

Branch report: keisku/opensearch-v2
Commit report: 26d1467
Test service: dd-trace-go

❌ 33 Failed (30 Known Flaky), 4342 Passed, 65 Skipped, 3m 44.43s Total Time

❌ Failed Tests (33)

This report shows up to 5 failed tests.

• TestAppendMiddleware - github.com/DataDog/dd-trace-go/contrib/aws/aws-sdk-go-v2/v2/aws - ❄️ Known flaky - Details

  Expand for error

   Failed
   
   === RUN   TestAppendMiddleware
   --- FAIL: TestAppendMiddleware (0.02s)
  

• TestAppendMiddlewareDynamodbGetItem - github.com/DataDog/dd-trace-go/contrib/aws/aws-sdk-go-v2/v2/aws - Details

  Expand for error

   Failed
   
   === RUN   TestAppendMiddlewareDynamodbGetItem
   --- FAIL: TestAppendMiddlewareDynamodbGetItem (0.02s)
  

• TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_failure_request - github.com/DataDog/dd-trace-go/contrib/aws/aws-sdk-go-v2/v2/aws - Details

  Expand for error

   Failed
   
   === RUN   TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_failure_request
       aws_test.go:560: 
           	Error Trace:	/home/runner/work/dd-trace-go/dd-trace-go/contrib/aws/aws-sdk-go-v2/aws/aws_test.go:560
           	Error:      	"[]" should have 1 item(s), but has 0
           	Test:       	TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_failure_request
       --- FAIL: TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_failure_request (0.01s)
  

• TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_success_request - github.com/DataDog/dd-trace-go/contrib/aws/aws-sdk-go-v2/v2/aws - Details

  Expand for error

   Failed
   
   === RUN   TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_success_request
       aws_test.go:554: 
           	Error Trace:	/home/runner/work/dd-trace-go/dd-trace-go/contrib/aws/aws-sdk-go-v2/aws/aws_test.go:554
           	Error:      	Received unexpected error:
           	            	not found, ResolveEndpointV2
           	Test:       	TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_success_request
       --- FAIL: TestAppendMiddlewareDynamodbGetItem/test_mocked_dynamodb_success_request (0.01s)
  

• TestAppendMiddlewareEventBridgePutEvents - github.com/DataDog/dd-trace-go/contrib/aws/aws-sdk-go-v2/v2/aws - ❄️ Known flaky - Details

  Expand for error

   Failed
   
   === RUN   TestAppendMiddlewareEventBridgePutEvents
       aws_test.go:766: 
           	Error Trace:	/home/runner/work/dd-trace-go/dd-trace-go/contrib/aws/aws-sdk-go-v2/aws/aws_test.go:766
           	Error:      	"[]" should have 1 item(s), but has 0
           	Test:       	TestAppendMiddlewareEventBridgePutEvents
   --- FAIL: TestAppendMiddlewareEventBridgePutEvents (0.01s)
  

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-03-14 02:27:35

Comparing candidate commit 7bdc027 in PR branch keisku/opensearch-v2 with baseline commit fa17f59 in branch v2-dev.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 54 metrics, 2 unstable metrics.