SEBA-386 Update olt-service documentation

Change-Id: Iecddac4da474052923c044913ad8ea78d5cb7328
diff --git a/VERSION b/VERSION
index 1b5105d..67da954 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.14
+2.1.15