[ES] Installation of agent in linux environment prompts ipset error.
Problem Description
The agent installation in the Linux environment prompts that ipset is not installed.
Alarm Information

Solution
"Ipset is a management tool for iptables. Whether it is installed or not does not directly affect the use of ES. Simply press 'y' to continue installing the agent."
Original Link
https://support.sangfor.com.cn/cases/list?product_id=16&type=1&category_id=2898&isOpen=true