安装 kuboard 出错：
Could not find the requested service firewalld: host
参考 https://github.com/eip-work/kuboard-spray/issues/86
安装 apt-get install firewalld -y 报下面错，折腾了好久还是不行，难道要强行退回到低版本的 python 吗？
root@k8s-node01:~# apt install firewalld
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
python3-selinux : Depends: python3 (
Packages, firewalld, have, done
