Feature: add fetch ingress list and ingress detail from k8s cluster api to backend

[HZ89]

What type of PR is this?

/kind feature

What this PR does / why we need it:
api add:

/api/v1//kubernetes/apps/:appId/ingresses/namespaces/:namespace/clusters/:cluster
/api/v1//kubernetes/apps/:appId/ingresses/:ingress/detail/namespaces/:namespace/clusters/:cluster

test result:

curl --location --request GET "http://127.0.0.1:8080/api/v1//kubernetes/apps/0/ingresses/namespaces/default/clusters/minikube"

{
  "data": {
    "pageNo": 1,
    "pageSize": 10,
    "totalPage": 1,
    "totalCount": 1,
    "list": [
      {
        "objectMeta": {
          "name": "my-nginx",
          "namespace": "default",
          "annotations": {
            "kubectl.kubernetes.io/last-applied-configuration": "{\"apiVersion\":\"extensions/v1beta1\",\"kind\":\"Ingress\",\"metadata\":{\"annotations\":{\"kubernetes.io/ingress.class\":\"traefik\",\"traefik.frontend.rule.type\":\"PathPrefixStrip\"},\"name\":\"my-nginx\",\"namespace\":\"default\"},\"spec\":{\"rules\":[{\"host\":\"my-nginx.exapmle.com\",\"http\":{\"paths\":[{\"backend\":{\"serviceName\":\"my-nginx\",\"servicePort\":80},\"path\":\"/\"}]}}]}}\n",
            "kubernetes.io/ingress.class": "traefik",
            "traefik.frontend.rule.type": "PathPrefixStrip"
          },
          "creationTimestamp": "2018-12-20T10:30:58Z"
        },
        "typeMeta": {
          "kind": "ingress"
        },
        "endpoints": []
      }
    ]
  }
}

curl --location --request GET "http://127.0.0.1:8080/api/v1//kubernetes/apps/0/ingresses/my-nginx/detail/namespaces/default/clusters/minikube"

{
  "data": {
    "objectMeta": {
      "name": "my-nginx",
      "namespace": "default",
      "annotations": {
        "kubectl.kubernetes.io/last-applied-configuration": "{\"apiVersion\":\"extensions/v1beta1\",\"kind\":\"Ingress\",\"metadata\":{\"annotations\":{\"kubernetes.io/ingress.class\":\"traefik\",\"traefik.frontend.rule.type\":\"PathPrefixStrip\"},\"name\":\"my-nginx\",\"namespace\":\"default\"},\"spec\":{\"rules\":[{\"host\":\"my-nginx.exapmle.com\",\"http\":{\"paths\":[{\"backend\":{\"serviceName\":\"my-nginx\",\"servicePort\":80},\"path\":\"/\"}]}}]}}\n",
        "kubernetes.io/ingress.class": "traefik",
        "traefik.frontend.rule.type": "PathPrefixStrip"
      },
      "creationTimestamp": "2018-12-20T10:30:58Z"
    },
    "typeMeta": {
      "kind": "ingress"
    },
    "endpoints": []
  }
}