Releasing voltctl 1.1.8

Change-Id: I6aebb61c1cc326e57a0717b7f4021670f982fc54
diff --git a/VERSION b/VERSION
index 0659a5b..18efdb9 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.1.8-dev
+1.1.8