ansible/ansible#6213

hosts

host1 ansible_ssh_host=host1.domain.example
host2 ansible_ssh_host=host2.domain.example

test1.yml

---
- hosts: host1
  gather_facts: False
  tasks:
  - command: hostname
    delegate_to: host2

test2.yml

---
- hosts: host1
  gather_facts: False
  tasks:
  - command: hostname
    delegate_to: some.other.host