[FEATURE]: Provide a k8s template to collect syslog logs

[yyuuttaaoo]

Concisely describe the proposed feature Lots of programs use syslog to record, rotate and forward logs. iLogtail supports receiving such forwarded logs from syslog. However, it is not very clear how to use it to receive syslog logs on K8s nodes. If a template is provided, newcomers will get on the road easily.

Describe the solution you'd like (if any) Provide a k8s template to collect node syslog logs

Additional comments The YAML should be named ilogtail-daemonset-from-syslog.yaml and located in the k8s_templates dir.