/usr/share/kubuntu-netbook-default-settings/share/autostart/plasma-netbook.desktop is in kubuntu-settings-netbook 1:14.04ubuntu15.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | [Desktop Entry]
Exec=plasma-netbook
Hidden=false
OnlyShowIn=KDE;
X-KDE-autostart-phase=BaseDesktop
|