We support backup and restore RBAC meta since:
milvus-backup: v0.4.21
Milvus: v2.4.10
Add rbac parameter in create and restore command
If set --rbac, will backup/restore RBAC meta.
./milvus-backup create -n backup --rbac./milvus-backup restore -n backup --rbacAdd rbac parameter in create and restore API request.

