script for rolling update milvus's componet which installed by helm
1. only support simple upgrade now,will upgrade the component in a safe order
2. won't keep old version information and don't support rollback now
3. the topology is hard-coded now
4. will patch instance's configmap and turn on standby mode
5. will patch instance's update strategy to rollingUpdate mode
6. not support milvus standalone with rocksmp
Signed-off-by: Sheldon <chuanfeng.liu@zilliz.com>
Sheldon