使用 Kubernetes ingress 设置"Cache-Control"标头

我在 AWS 上运行了一个 Kubernetes 集群，并试图通过 Kubernetes ingress 修改缓存控制器标头，如下所示：

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: example-ingress-lab-static
  namespace: lab
  annotations:
    ingress.kubernetes.io/rewrite-target: /$1
    ingress.kubernetes.io/enable-cors: "true"
    ingress.kubernetes.io/cors-allow-methods: GET、POST、PUT、OPTIONS、DELETE、HEAD、PATCH
    ingress.kubernetes.io/cors-allow-headers: >-
      Accept-Charset、Accept-Encoding、Access-Control-Request-Headers、Access-Control-Request-Method、Authorization、
      Cache-Control、Connection、Content-Encoding、Content-Type、Content-Length、DNT、Date、Host、If-Modified-Since、
      Keep-Alive、Origin、Referer、Server、TokenIssueTime、Transfer-Encoding、User-Agent、Vary、X-CustomHeader、X-Requested-With、
      password、username、x-request-id、x-ratelimit-app、x-auth-id、x-auth-key、x-guest-token、X-HTTP-Method-Override、
      x-oesp-username、x-oesp-token、x-cus、x-dev、X-Client-Id、X-Device-Code、X-Language-Code、UserRole、x-session-id、x-entitlements-token
    ingress.kubernetes.io/configuration-snippet: |
      more_set_headers 'Access-Control-Allow-Origin:$origin';
    ingress.kubernetes.io/proxy-buffering: "on"
    ingress.kubernetes.io/proxy-buffer-size: "2048k"
    ingress.kubernetes.io/server-snippet: |
      chunked_transfer_encoding        off;

      location ((https|http):\/\/.*\/test-service\/images\/.*\/imageName.*) {
        more_set_headers 'Cache-Control: public, max-age=14400';
      }

spec:
  rules:
  - host: static-url-lab.lab.cdn.example.com
    http:
      paths:
      - path: /test-service/(.*)
        backend:
          serviceName: test-service
          servicePort: 80

然而，这似乎并没有起作用。当我 curl 匹配该模式的资源时，我会收到默认值：

# Example curl - not exact
curl -v "https://static-url-lab.lab.cdn.example.com/test-service/intent/test/image_name" -o /dev/null 2>&1 grep -E "(Cache-Control: max|X-Cache)"

< Cache-Control: max-age=172800, public

据我所知，正则表达式应该匹配，但没有发生任何变化，我漏了什么？