gistfile1.txt

variables:

env_vars:
  HTTP_PROXY: http://proxy.local:8080
  HTTPS_PROXY: http://proxy.local:8080

playbooks:

task:
- name: preflight checks
  hosts: all:!vyatta-*
  any_errors_fatal: true
  roles:
    - role: preflight-checks
      tags: ['always']
environment: "{{ env_vars|default({}) }}"

retries:

- name: install apache package
  package: 
    name: "{{ openstack_meta.apache[ursula_os].package_name }}"
  register: result
  until: result|succeeded
  retries: 5