Migration to new event defination for OpenONU adapter

     This commit is for the migation of alarms and kpi fw in
     pyvoltha to the new event fw and has the following changes:

     1. Alarms definations are changed to events and modified accordingly
        to incorporate the changes in event proto message

     2. Kpis module is also moved under the events fw

Change-Id: Icfbb28e364b662ea8483b7472fe21ddf4551372e
diff --git a/VERSION b/VERSION
index 7ec1d6d..ccbccc3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.0
+2.2.0