[VOL-5020] Release repo:voltha-helm-charts (branch=voltha-2.12)

VERSION
.gitreview
----------
 o branch=voltha-2.12
 o Bump version string to avoid conflicts with master (x.{1+y}.z)
 o Change defaultpath=voltha-x.y so rebase/merge are applied to release branch.

Change-Id: Ie304f9f2fa3661cad5d6e30e761ae9d9f6d5d2e9
diff --git a/.gitreview b/.gitreview
index b6f18ed..4273a75 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,4 +3,4 @@
 port=29418
 project=voltha-helm-charts.git
 defaultremote=origin
-defaultbranch=master
+defaultbranch=voltha-2.12
diff --git a/VERSION b/VERSION
index 7ad92bf..15a2799 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.3.0-dev3
+3.3.0