[apt] frontend=<%= scope.lookupvar('apt::listchanges::frontend') %> email_address=<%= scope.lookupvar('apt::listchanges::email') %> confirm=<%= scope.lookupvar('apt::listchanges::confirm') %> save_seen=<%= scope.lookupvar('apt::listchanges::saveseen') %> which=<%= scope.lookupvar('apt::listchanges::which') %>