[VOL-3107] Add DeleteGroup API in openolt.proto

Change-Id: I6aa82e364f4b37a02e45e2e09ce10f2042ffd9fa
diff --git a/VERSION b/VERSION
index 9c25013..86fb650 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.3.6
+3.3.7