Add FTTB services example yaml and use sTag for FTTB DHCP packets

Change-Id: I2eb0d8d9f557afe0d6bb08741aa9b5486cc05f7c
diff --git a/VERSION b/VERSION
index f8f4f03..6b89d58 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.12.1
+1.12.2