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

Change-Id: I7f3457882830de050d1357254fc5483faf91d03f
diff --git a/xos-profiles/base-openstack/Chart.yaml b/xos-profiles/base-openstack/Chart.yaml
index e6003da..3f0f3f0 100644
--- a/xos-profiles/base-openstack/Chart.yaml
+++ b/xos-profiles/base-openstack/Chart.yaml
@@ -1,5 +1,4 @@
 ---
-
 # Copyright 2018-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,8 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-apiVersion: v1
-appVersion: "1.0"
-description: A Helm chart for the "base-openstack" profile
 name: base-openstack
+description: A Helm chart for the "base-openstack" profile
+icon: https://guide.opencord.org/logos/cord.svg
 version: 0.1.0
+
+# xosproject/tosca-loader version
+appVersion: 1.1.3