Updating openonu and stack charts with ONU sw update fixes

Change-Id: I6f0b506438e445f14e11951f91bee76b189f55f0
diff --git a/VERSION b/VERSION
index 860487c..37c2961 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.7.1
+2.7.2