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

Change-Id: I7f3457882830de050d1357254fc5483faf91d03f
diff --git a/sadis-server/templates/sadis-deployment.yaml b/sadis-server/templates/sadis-deployment.yaml
index 9e2c882..36a14f9 100644
--- a/sadis-server/templates/sadis-deployment.yaml
+++ b/sadis-server/templates/sadis-deployment.yaml
@@ -29,8 +29,8 @@
     spec:
       containers:
         - name: sadis-server
-          image: {{ .Values.image }}
-          imagePullPolicy: {{ .Values.imagePullPolicy }}
+          image: {{ .Values.global.registry }}{{ .Values.image.repository }}:{{ tpl .Values.image.tag . }}
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
           ports:
             - containerPort: 8000
               port: 8000