BZ #1129521: Unconfigured interfaces should be ONBOOT=no

https://bugzilla.redhat.com/show_bug.cgi?id=1129521

Set unconfigured interfaces to ONBOOT=no and BOOTPROTO=none

(cherry picked from commit 8948c90c48b95960eda042aeb949b3e01dda3ebb)
Automatic commit of package [foreman-installer-staypuft] release [0.4.7-1].