networkpolicy test check

[lut777]

Expected Behavior

kubeovn 1.10 networkpolicy pass .

Actual Behavior

kubeovn 1.10 networkpolicy check failed.
need some inspection .

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)
  

[lut777]

The first step of check 8 and check 9 failed, which is different from the scenario in PR #1935.
So this may be a new bug.
Further inspection needed.