fr-net: use 'hdlcnet1' as default netdev

The gbproxy tests and our scripts have started to use
hdlc0..7 paired with hdlcnet0..7.  Let's adjust fr-net to
also use 'hdlcnet1' as the pairing 'fr' test uses 'hdlc1'

Change-Id: If456a575cc2ae0ab2fc63730b329131dfcc70a47
diff --git a/fr-net/FRNET_Tests.ttcn b/fr-net/FRNET_Tests.ttcn
index 94b32dc..3943ff1 100644
--- a/fr-net/FRNET_Tests.ttcn
+++ b/fr-net/FRNET_Tests.ttcn
@@ -18,7 +18,7 @@
 				{
 					provider := {
 						fr := {
-							netdev := "hdlc2",
+							netdev := "hdlcnet1",
 							dlci := 123
 						}
 					},