Added voltha-infra chart
Added voltha-stack chart
Moved "defaults" values to "global" so that they can be managed by the
macro charts
Added examples for different workflows

Change-Id: I5fb2bfa54a1be725892445e93bd8a35d608e5d14
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index f0e8676..f717ccd 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha"
-version: "2.8.0"
+version: "2.8.1"
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
   - "onf"