[scripts] switch to systemd as the default init system

scripts/inner_source_chroot_update.sh

@@ -83,6 +83,10 @@ fi
 
 rm -rf /var/lib/entropy/client/packages
 
+# Make sure that systemd is still the default init system
+eselect sysvinit set systemd
+eselect settingsd set systemd
+
 # copy Portage config from sabayonlinux.org entropy repo to system
 for conf in package.mask package.unmask package.keywords make.conf package.use; do
 	repo_path=/var/lib/entropy/client/database/*/sabayonlinux.org/standard