Bump version to 2.3.18 because Jenkins was down and previous version didn't release

Change-Id: I99ccff27a84241bd69e53cafc3cb4e31c1c5f088
diff --git a/VERSION b/VERSION
index 81e9469..ad37abb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.3.17
+2.3.18