[CentOS] shutdown -h doesn't

I've got a fresh CentOS 7 test machine, fully patched.  The command:

     shutdown -h now

surprisingly does not halt the machine.  Instead it reboots it.  WTF?

I found the following Debian discussion which seems to be the same
issue: <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=766338>

However, removing kexec-tools in this case did not solve the problem.
Nor does "systemctl poweroff" work.

Does anyone else see this?   No, nothing is filed in bugzilla yet.

Devin