[CentOS] disk selection with ks file in 7.3

My existing ks files leave the disk selection unset in 7.3. Checking the manual,
I do not see changes in that area so performing a manual installation and comparing
the resulting config to mine yields little difference. Taking the anaconda generated
disk config section and deploying a new ks with this halts at disk selection unset still?

Anyone seeing this?

jlc