use ansible to wait for a pg db to come up and start accepting connections

gistfile1.txt

- name: wait for db to come up
  shell:  until /usr/bin/pg_isready; do sleep 1; done
  args:
    executable: /bin/bash
  changed_when: false
  delegate_to: "{{ database_host }}"
  become_user: postgres
  run_once: true