[AspNetCore] Simplify benchmarks and add gRPC#4091

martincostello merged 3 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-dotnet-contrib:mainfrom

martincostello:simplify-aspnetcode-benchmarksmartincostello/opentelemetry-dotnet-contrib:simplify-aspnetcode-benchmarksCopy head branch name to clipboard