x-apigateway-backend.httpVpcMemberGroupEndpoints

含义：API网关定义的HTTP VPC类型API后端服务定义。此扩展定义受限使用，如需使用，请提交工单开通。

作用域：x-apigateway-backend

示例：

paths:
  '/users/{userId}':
    get:
      produces:
        - "application/json"
      parameters:
        - name: "X-Auth-Token"
          description: "认证token"
          type: "string"
          in: "header"
          required: true
      responses:
        default:
          description: "default response"
      x-apigateway-request-type: "public"
      x-apigateway-backend:        
        type: "HTTP-VPC-MEMBER-GROUP"
        httpVpcMemberGroupEndpoints:
          memberGroupUrlInfos:
            - name: "xxxxx"
              scheme: "http"
              method: "GET"
              path: "/users"
          enableClientSsl: false          
          enableSmChannel: false          
          retryCount: 0
          timeout: 5000
          name: "VPC_6ZZ0"