ansible gather facts from another host

gather_delegation.yml

---
## works only on ansible >= 2.0
###### inventory:
# [group1]
# test-01
# [group2]
# test-02

- hosts: group2
  tasks:
    - name: Gather facts
      setup:
      delegate_to: "{{ item }}"
      delegate_facts: True
      with_items: "{{ groups['group1'] }}"

    - name: Show facts
      debug:
        msg: "{{ hostvars['test-01'] }}"

Great job, thank you so much.