Allow for override of operator image name

Problem

image: {{.Values.hub}}/operator:{{.Values.tag}}

If customers are not using a multi-level supported container registry the image name could be different than the one that is assumed here. For istio operator the offending line is here.

Resolution

Templatize the name of the operator image

chart/templates/deployment.yaml

@@ -16,7 +16,8 @@ spec:
       serviceAccountName: istio-operator{{- if not (eq .Values.revision "") }}-{{ .Values.revision }}{{- end }}
       containers:
         - name: istio-operator
-          image: {{.Values.hub}}/operator:{{.Values.tag}}
+          ## Added by Big Bang
+          image: {{.Values.hub}}/{{.Values.image | default "operator" }}:{{.Values.tag}}
           command:
           - operator
           - server