Updating BBWF configs

Change-Id: I09a9ae217c9bb801261b461a8da11d7d42d30794
diff --git a/tosca-configs/att-workflow/bbwf-olt.yaml b/tosca-configs/att-workflow/bbwf-olt.yaml
index 3f56138..2fad65f 100755
--- a/tosca-configs/att-workflow/bbwf-olt.yaml
+++ b/tosca-configs/att-workflow/bbwf-olt.yaml
@@ -50,7 +50,7 @@
       type: tosca.nodes.OLTDevice
       properties:
         name: Adtran OLT
-        device_type: openolt
+        device_type: adtran
         host: 192.168.100.112
         port: 9191
         switch_datapath_id: of:0000000000000001