Bumping version after 2.7 release

Change-Id: I854295161a61f57b378a8183c0e78993ad2c68bb
diff --git a/VERSION b/VERSION
index 9cec716..944880f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.1.6
+3.2.0