k8s ingress 增加 跨域配置

    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/cors-allow-credentials: "true"
    nginx.ingress.kubernetes.io/cors-allow-headers: '*'
    nginx.ingress.kubernetes.io/cors-allow-methods: PUT, GET, POST, OPTIONS
    nginx.ingress.kubernetes.io/cors-allow-origin: http://test-admin.d.rrinner.cn   （ 指定域名）
    nginx.ingress.kubernetes.io/enable-cors: "true"