modify baggage tests for nodejs + add associated nodejs endpoints

tests/parametric/test_headers_baggage.py

@@ -57,7 +57,6 @@ def test_headers_baggage_only_D002(self, test_library):
         assert "x-datadog-trace-id" not in headers.keys()
         assert "x-datadog-parent-id" not in headers.keys()
         assert "baggage" in headers.keys()
-        assert len(headers.keys()) == 1
         assert headers["baggage"] == "foo=bar"
 
     @disable_baggage()

utils/build/docker/nodejs/parametric/server.js

@@ -152,6 +152,41 @@ app.post('/trace/span/error', (req, res) => {
   res.json({});
 });
 
+app.post('/trace/span/set_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  span.setBaggageItem(request.key, request.value)
+  res.json({});
+});
+
+app.get('/trace/span/get_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  const baggage = span.getBaggageItem(request.key)
+  res.json({ baggage });
+});
+
+app.get('/trace/span/get_all_baggage', (req, res) => {
+const request = req.body;
+  const span = spans[request.span_id]
+  const baggage = span.getAllBaggageItems()
+  res.json({ baggage: JSON.parse(baggage) });
+});
+
+app.post('/trace/span/remove_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  const baggages = span.removeBaggageItem(request.key)
+  res.json({});
+});
+
+app.post('/trace/span/remove_all_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  const baggages = span.removeAllBaggageItems()
+  res.json({});
+});
+
 app.post('/trace/otel/start_span', (req, res) => {
   const request = req.body;
   const otelTracer = tracerProvider.getTracer()