Fix for Netflix#127

Handle the case where the hystrix RibbonCommand timed-out before the ribbon client received a response from origin.
So in this situation we want to release the connection now, as we know that the zuul filter chain has already continued
without us and therefore won't cleanup itself.

zuul-netflix/src/main/java/com/netflix/zuul/dependency/ribbon/hystrix/RibbonCommand.java

@@ -127,8 +127,19 @@ HttpResponse forward() throws Exception {
 
         HttpResponse response = restClient.executeWithLoadBalancer(httpClientRequest);
         context.setZuulResponse(response);
+
+        // Here we want to handle the case where this hystrix command timed-out before the
+        // ribbon client received a response from origin. So in this situation we want to
+        // cleanup this response (release connection) now, as we know that the zuul filter
+        // chain has already continued without us and therefore won't cleanup itself.
+        if (isResponseTimedOut()) {
+            response.close();
+        }
+
         return response;
     }
+
+
 
     public static class UnitTest {