从 v3.0 离线升级到 v3.1.1
1、“监控告警 -> 告警消息、告警策略” 页面打开报错，错误信息及截图
The request operation to custom alerting rule could not be done because thanos ruler is not enabled
2、“监控告警 -> 自定义监控” 页面打开报错，错误信息及截图
no matches for kind “ClusterDashboard” in version “monitoring.kubesphere.io/v1alpha1”
3、拉取 ks-alerting-migration 镜像地址有问题
拉取镜像地址为：
域名/kubesphere311/kubespheredev/ks-alerting-migration:v3.1.0
实际镜像地址为：
域名/kubesphere311/kubesphere/ks-alerting-migration:v3.1.0
