master puavo-add-new-organisation: Use '>' for prompts
master puavo-add-new-organisation: Add --puppet-host
For legacy Lucid systems. Restored from
https://github.com/opinsys/puavo-ds/blob/32e9995f9d8cc2a7068c3101f956c84bdfce910a/master/add_new_organisation.rb#L183
master: Move assert_exec to helper.rb
master bin/puavo-init-ldap: Add --help