attempt to fix consul problem

src/Ocelot/Configuration/Creator/FileOcelotConfigurationCreator.cs

@@ -178,7 +178,7 @@ private async Task<ReRoute> SetUpReRoute(FileReRoute fileReRoute, FileGlobalConf
         private string CreateReRouteKey(FileReRoute fileReRoute)
         {
             //note - not sure if this is the correct key, but this is probably the only unique key i can think of given my poor brain
-            var loadBalancerKey = $"{fileReRoute.UpstreamPathTemplate}{fileReRoute.UpstreamHttpMethod}";
+            var loadBalancerKey = $"{fileReRoute.UpstreamPathTemplate}|{string.Join(",", fileReRoute.UpstreamHttpMethod)}";
             return loadBalancerKey;
         }