Revert "XOS/NEM charts, use a global registry var, split docker image name/tag/pullPolicy"

This reverts commit 1f58c2afbd680c8c618bff6f66e9982515dd1caf.

Change-Id: I0d7ef37a420168276472675b005482d6d11daabd
diff --git a/xos-services/volt/Chart.yaml b/xos-services/volt/Chart.yaml
index cf235e9..f432ea8 100644
--- a/xos-services/volt/Chart.yaml
+++ b/xos-services/volt/Chart.yaml
@@ -15,7 +15,4 @@
 
 name: volt
 description: A Helm chart for XOS's "olt-service" service
-icon: https://guide.opencord.org/logos/cord.svg
-
-version: 2.1.1
-appVersion: 2.1.1
+version: 2.0.2-dev