otelconf: add test files for rc2#8034

dmathieu merged 6 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-go-contrib:mainfrom

codeboten:codeboten/add-v1rc2-test-filecodeboten/opentelemetry-go-contrib:codeboten/add-v1rc2-test-fileCopy head branch name to clipboard