Add requestSource to metrics data in metricsMiddleware

Author: RubenChM

src/middlewares/metrics/index.js

@@ -269,6 +269,7 @@ function metricsMiddleware(basePaths = ['/rest/current', '/rest/v1'], debug = fa
       data = {
         status_code: res.statusCode,
         latency: (Date.now() - startMs) / 1000,
+        requestSource,
         route,
         ...params,
         ...req.geoStats,