Actualizo parámetro para conectividad.

Services/EndpointMysql.php

@@ -23,8 +23,8 @@ class EndpointMysql
     {
         $this->serviceContainer = $serviceContainer;
 
-        if($this->serviceContainer->getParameter("statsd.connection")) {
-            $this->location = $this->serviceContainer->getParameter("statsd.connection");
+        if($this->serviceContainer->getParameter("endpoint.mysql.connection")) {
+            $this->location = $this->serviceContainer->getParameter("endpoint.mysql.connection");
         } else {
             $this->location = null;
         }