centos7 缺少semanage命令，直接执行yum install semanage 没有包存在
通过以下命令可查到命令对应的包
[root@localhost deploy_image]# yum whatprovides /usr/sbin/semanage
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile* base: mirror.bit.edu.cn* epel: mirrors.yun-idc.com* extras: mirrors.bfsu.edu.cn* updates: mirrors.bfsu.edu.cn
policycoreutils-python-2.5-34.el7.x86_64 : SELinux policy core python utilities
Repo : base
Matched from:
Filename : /usr/sbin/semanage
yum install policycoreutils-python-2.5-34.el7.x86_64