Reply to self...
Am 24.03.16 schrieb Johannes Kastl:
> is it possible to read a value from a file located in the host_vars
> folder, if this is not the host the play should run on?
Yes, *if* the host new-host is added to the inventory before trying to
get its variables.
- debug: var=hostvars['new-host']['ansible_user']
Johannes