otlptrace: Add instrumentation scope attributes (#5934)

Towards https://github.com/open-telemetry/opentelemetry-go/issues/5844

CHANGELOG.md

@@ -19,6 +19,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   The package contains semantic conventions from the `v1.27.0` version of the OpenTelemetry Semantic Conventions. (#5894)
 - Add `Attributes attribute.Set` field to `Scope` in `go.opentelemetry.io/otel/sdk/instrumentation`. (#5903)
 - Add `Attributes attribute.Set` field to `ScopeRecords` in `go.opentelemetry.io/otel/log/logtest`. (#5927)
+- `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc` adds instrumentation scope attributes. (#5934)
+- `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp` adds instrumentation scope attributes. (#5934)
 
 ### Fixed
 

exporters/otlp/otlptrace/internal/tracetransform/instrumentation.go

@@ -13,7 +13,8 @@ func InstrumentationScope(il instrumentation.Scope) *commonpb.InstrumentationSco
 		return nil
 	}
 	return &commonpb.InstrumentationScope{
-		Name:    il.Name,
-		Version: il.Version,
+		Name:       il.Name,
+		Version:    il.Version,
+		Attributes: Iterator(il.Attributes.Iter()),
 	}
 }

exporters/otlp/otlptrace/internal/tracetransform/instrumentation_test.go

@@ -0,0 +1,39 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package tracetransform
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/sdk/instrumentation"
+	commonpb "go.opentelemetry.io/proto/otlp/common/v1"
+)
+
+func TestInstrumentationScope(t *testing.T) {
+	want := &commonpb.InstrumentationScope{
+		Name:    "name",
+		Version: "1.0.0",
+		Attributes: []*commonpb.KeyValue{
+			{
+				Key: "foo",
+				Value: &commonpb.AnyValue{
+					Value: &commonpb.AnyValue_StringValue{StringValue: "bar"},
+				},
+			},
+		},
+	}
+
+	in := instrumentation.Scope{
+		Name:       "name",
+		Version:    "1.0.0",
+		Attributes: attribute.NewSet(attribute.String("foo", "bar")),
+	}
+
+	got := InstrumentationScope(in)
+
+	assert.Equal(t, want, got)
+}