Moving to latest openonu version

Change-Id: I968e69beb1b99fc5bc1e359c91044fa447ce0bf9
diff --git a/VERSION b/VERSION
index 63cb62f..92e6e77 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.8.14
+2.8.15
diff --git a/release_notes/voltha_2.8.rst b/release_notes/voltha_2.8.rst
index 3fb4c43..9916fec 100644
--- a/release_notes/voltha_2.8.rst
+++ b/release_notes/voltha_2.8.rst
@@ -210,7 +210,7 @@
 - `ofagent-go <https://gerrit.opencord.org/gitweb?p=ofagent-go.git;a=tree;h=refs/heads/voltha-2.8>`_ - ``1.6.5``  with chart ``2.9.10``
 - `voltctl <https://gerrit.opencord.org/gitweb?p=voltctl.git;a=tree>`_ - ``1.6.11``
 - `voltha-openolt-adapter <https://gerrit.opencord.org/gitweb?p=voltha-openolt-adapter.git;a=tree;h=refs/heads/voltha-2.8>`_ - ``3.5.11`` with chart ``2.9.11``
-- `voltha-openonu-adapter-go <https://gerrit.opencord.org/gitweb?p=voltha-openonu-adapter-go.git;a=tree;h=refs/heads/voltha-2.8>`_ - ``1.3.16`` with chart ``2.8.13``
+- `voltha-openonu-adapter-go <https://gerrit.opencord.org/gitweb?p=voltha-openonu-adapter-go.git;a=tree;h=refs/heads/voltha-2.8>`_ - ``1.3.23`` with chart ``2.8.15``
 - `voltha-onos <https://gerrit.opencord.org/gitweb?p=voltha-onos.git;a=tree;h=refs/heads/voltha-2.8>`_ -  ``5.0.3`` with chart ``0.1.16``
 - `openolt agent <https://gerrit.opencord.org/gitweb?p=openolt.git;a=tree;h=refs/heads/voltha-2.8>`_ - ``3.4.9``
 - `voltha-protos <https://github.com/opencord/voltha-protos/releases/tag/v4.0.5>`_ - ``4.2.0``
@@ -223,7 +223,7 @@
 ++++++++++++++++++++
 This section refers to the macro charts to deploy the required infrastructure and a (or many) VOLTHA stacks:
 - Voltha-infra: ``2.8.2``
-- Voltha-stack: ``2.8.15``
+- Voltha-stack: ``2.8.16``
 
 BAL Version:
 ++++++++++++