[VOL-1553] Improve device graph performance

This update focussed on generating routes using the device graph.
It improves the performance by at least 5 times.

Change-Id: I79bdbca8ea3d134e87848e45140d07ee3831f12c
diff --git a/rw_core/core/logical_device_manager.go b/rw_core/core/logical_device_manager.go
index 2fc0f1e..2417b60 100644
--- a/rw_core/core/logical_device_manager.go
+++ b/rw_core/core/logical_device_manager.go
@@ -336,7 +336,7 @@
 			return err
 		}
 		// Update the device routes - let it run in its own go routine as it can take time
-		go agent.updateRoutes()
+		//go agent.updateRoutes()
 	}
 	return nil
 }