[SEBA-494] Setting required core version

Change-Id: I0ee31e464e3373b28d19884b36b15936f5864bbf
diff --git a/xos/synchronizer/config.yaml b/xos/synchronizer/config.yaml
index df56433..ad6e7e2 100644
--- a/xos/synchronizer/config.yaml
+++ b/xos/synchronizer/config.yaml
@@ -15,6 +15,7 @@
 
 
 name: vrouter
+core_version: ">=2.2.1"
 required_models:
   - VRouterService
   - VRouterServiceInstance