fix(systemd): set right permissions for the machine-id file

Fixes issue #1864

Author: aafeijoo-suse

Diff for: modules.d/00systemd/module-setup.sh

@@ -192,6 +192,7 @@ install() {
 
     if ! [[ -e "$initdir/etc/machine-id" ]]; then
         : > "$initdir/etc/machine-id"
+        chmod 444 "$initdir/etc/machine-id"
     fi
 
     # install adm user/group for journald