[EDGEPOD-149] Adding fabric link in Switch model

Change-Id: Id03fc5c58385820276654ba4c9ab549748997caf
diff --git a/xos/synchronizer/models/fabric.xproto b/xos/synchronizer/models/fabric.xproto
index d7023bd..53ca376 100644
--- a/xos/synchronizer/models/fabric.xproto
+++ b/xos/synchronizer/models/fabric.xproto
@@ -43,6 +43,10 @@
     optional string pipeconf = 9 [
         help_text = "Pipeline configuration",
         max_length = 1024];
+    optional manytoone fabric->FabricService:switch = 10:1013 [
+        help_text = "The Fabric Service which owns this switch",
+        db_index = True,
+	tosca_key=True];
 }
 
 message SwitchPort(XOSBase) {