Updating documentation with Radisys OLT and released version deployment, using latest openonu-go, moving to 2.9.0 Versions for infra e stack

Change-Id: I7b7836676fa478b8d7d168e91e151aee89c0a2dc
diff --git a/voltha-infra/Chart.yaml b/voltha-infra/Chart.yaml
index b393234..bfdc63b 100644
--- a/voltha-infra/Chart.yaml
+++ b/voltha-infra/Chart.yaml
@@ -29,7 +29,7 @@
 name: voltha-infra
 
 appVersion: "2.8"
-version: 0.2.8
+version: 2.8.0
 
 dependencies:
   - name: onos-classic