Networkpolicy should disable log by default to avoid ddos

[oilbeater]

Expected Behavior

Actual Behavior

Steps to Reproduce the Problem

Additional Info

• Kubernetes version:

  Output of kubectl version:

  (paste your output here)
  

• kube-ovn version:

  (paste your output here)
  

• operation-system/kernel version:

  Output of awk -F '=' '/PRETTY_NAME/ { print $2 }' /etc/os-release:
  Output of uname -r:

  (paste your output here)
  

[hongzhen-ma]

ACL 创建的时候，携带的 --log 参数，会在ovn-controller 中生成ACL匹配的log，影响性能。
考虑增加annotation或者其他参数，来控制是否开启ACL的log功能