kerberos安装包

安装kerberos5时需要的rpm包，版本1.15.1-37.el7_6.x86_64。里面4个文件：krb5-libs-1.15.1-37.el7_6.x86_64.rpm；krb5-server-1.15.1-37.el7_6.x86_64.rpm；krb5-workstation-1.15.1-37.el7_6.x86_64.rpm；libkadm5-1.15.1-37.el7_6.x86_64.rpm