Set the namespace/name values for the istio/gateway chart.

@@ -20,7 +20,9 @@ releases:
         alias: gateway
         version: {{ $.Values.version.istio }}
     values:
-      - gateway: {}
+      - gateway:
+          namespace: istio-ingress
+          name: {{ .Values.name }}
         resources:
           - apiVersion: v1
             kind: ConfigMap