Update device_id of Flex OLT

Change-Id: Idee355ac1a65938394ed256208078b2825166a02
diff --git a/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml b/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml
index 9be0e5d..3064223 100755
--- a/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml
+++ b/tosca-configs/att-workflow/flex-pod1-olt-fabric.yaml
@@ -105,7 +105,7 @@
       properties:
         serial_number: ALPHe3d1cfa7
         pon_port_id: 536870912
-        device_id: of:000000000ac004da
+        device_id: of:000000000ac004ce
       requirements:
         - owner:
             node: service#att