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

Change-Id: I7f3457882830de050d1357254fc5483faf91d03f
diff --git a/xos-services/mcord-subscriber/Chart.yaml b/xos-services/mcord-subscriber/Chart.yaml
index ab2afd4..01109e5 100644
--- a/xos-services/mcord-subscriber/Chart.yaml
+++ b/xos-services/mcord-subscriber/Chart.yaml
@@ -15,4 +15,7 @@
 
 name: mcord-subscriber
 description: A Helm chart that creates a subscriber for the "mcord" service
-version: 2.0.0
+icon: https://guide.opencord.org/logos/cord.svg
+
+version: 2.0.1
+appVersion: 2.0.1