I can't install srvadmin-all

I'm trying to install srvadmin-all on CentOS7 using follow instuctoins for PowerEdge R730XD.

wget http://linux.dell.com/repo/hardware/dsu/bootstrap.cgi
sh bootstrap.cgi
yum install dell-system-update
yum install srvadmin-all

When I do "yum install srvadmin-all", I got error

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.anigil.com
 * epel: mirror.misakamikoto.network
 * extras: mirror.anigil.com
 * updates: mirror.anigil.com
No package srvadmin-all available.
Error: Nothing to do

How can I install srvadmin-all ?