[Bug]: [ResourceGroup] Fail to transfer mutilple nodes

[yanliang567]

Is there an existing issue for this?

• [X] I have searched the existing issues

Environment

- Milvus version:master-20230210-f66d36f1
- Deployment mode(standalone or cluster):cluster
- MQ type(rocksmq, pulsar or kafka):pulsar
- SDK version(e.g. pymilvus v2.0.0rc2): pymilvus-2.3.0.dev34

Current Behavior

when transfer 2 nodes to a resource group, only one was transferred.

Expected Behavior

transfer multi nodes successfully at one request

Steps To Reproduce

1. there are 8 querynodes in default rg
2. create a new rgA
3. transfer 4 querynode to rgA

Milvus Log

No response

Anything else?

No response

[yanliang567]

/assign @weiliu1031 /unassign

[yanliang567]

verified on 2.2.0-20230224-ba9443d1