For non-XOS charts, use a global registry var, split docker image name/tag/pullPolicy

Change-Id: Icffc569e2c152e0b413f4c7b7d9a546bd9a3ef58
diff --git a/ves-agent/templates/deployment.yaml b/ves-agent/templates/deployment.yaml
index 81949bd..ff9d4a9 100644
--- a/ves-agent/templates/deployment.yaml
+++ b/ves-agent/templates/deployment.yaml
@@ -35,7 +35,7 @@
     spec:
       containers:
         - name: {{ .Chart.Name }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          image: "{{ .Values.global.registry }}{{ .Values.image.repository }}:{{ tpl .Values.image.tag . }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           ports:
             - name: http