Revert "SEBA-357: remove deprecated uplink field"

This reverts commit 97cdd04bd3bbda4e7a4d46a1c3eaa6433e3581c1.

Change-Id: I1b50ca5e4c6de6298b6c1f10adde1006ef4f52b3
diff --git a/tosca-configs/att-workflow/onf-demo-pod-olt.yaml b/tosca-configs/att-workflow/onf-demo-pod-olt.yaml
index 9029d4a..35b1607 100755
--- a/tosca-configs/att-workflow/onf-demo-pod-olt.yaml
+++ b/tosca-configs/att-workflow/onf-demo-pod-olt.yaml
@@ -39,6 +39,7 @@
         switch_datapath_id: of:0000000000000001
         switch_port: "1"
         outer_tpid: "0x8100"
+        uplink: "65536"
         nas_id: "NAS_ID"
         serial_number: "192.168.100.111:9191"
       requirements: