fix failing testcase

lib/http-routes/api/create-call.js

@@ -193,12 +193,11 @@ router.post('/', async(req, res) => {
             direction: CallDirection.Outbound,
             req: inviteReq,
             to,
-            tag: app.tag,
+            tag: {...app.tag, ...req.body.metadata},
             callSid,
             accountSid: req.body.account_sid,
             applicationSid: app.application_sid,
-            traceId: rootSpan.traceId,
-            metadata: req.body.metadata
+            traceId: rootSpan.traceId
           });
           cs = new RestCallSession({
             logger: sipLogger,