Update Flex OLT IP for TOSCA configs

Change-Id: I649b93effc7389c27a78e7fb609c6e7a25f2785c
diff --git a/tosca-configs/att-workflow/flex-pod1-olt-olt.yaml b/tosca-configs/att-workflow/flex-pod1-olt-olt.yaml
index 0a27c2b..a00311b 100755
--- a/tosca-configs/att-workflow/flex-pod1-olt-olt.yaml
+++ b/tosca-configs/att-workflow/flex-pod1-olt-olt.yaml
@@ -34,7 +34,7 @@
       properties:
         name: olt-1
         device_type: openolt
-        host: 10.192.4.218
+        host: 10.192.4.206
         port: 9191
         switch_datapath_id: of:0000cc37ab5b6da8
         switch_port: "7"