add subscription id to span

Signed-off-by: jyjiangkai <[email protected]>

Author: hwjiangkai

observability/tracing/exporter/event_trace_exporter.go

@@ -117,9 +117,9 @@ func newEvent(span tracesdk.ReadOnlySpan) v2.Event {
 	event.SetType(span.SpanKind().String())
 	data := make(map[string]interface{})
 	data["name"] = span.Name()
-	data["kind"] = span.SpanKind()
 	data["trace_id"] = span.SpanContext().TraceID().String()
 	data["span_id"] = span.SpanContext().SpanID().String()
+	data["span_kind"] = span.SpanKind().String()
 	data["start_time"] = span.StartTime()
 	data["end_time"] = span.EndTime()
 	data["status"] = span.Status()