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

Change-Id: I7f3457882830de050d1357254fc5483faf91d03f
diff --git a/xos-profiles/ponsim-pod/Chart.yaml b/xos-profiles/ponsim-pod/Chart.yaml
index 157e299..656e2b4 100644
--- a/xos-profiles/ponsim-pod/Chart.yaml
+++ b/xos-profiles/ponsim-pod/Chart.yaml
@@ -13,8 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-apiVersion: v1
-appVersion: "1.0"
-description: A Helm chart for loading the Ponsim pod's TOSCA files into XOS
 name: ponsim-pod
-version: 0.1.0
+description: A Helm chart for loading the Ponsim pod's TOSCA files into XOS
+icon: https://guide.opencord.org/logos/xos.svg
+
+version: 1.0.0
+
+# xosproject/tosca-loader version
+appVersion: 1.1.3