Groups vars for packages depending on PHP version
Let's use group vars when Ansible 2.3 is available, see https://docs.ansible.com/ansible/playbooks_variables.html#variable-precedence-where-should-i-put-a-variable
Let's use group vars when Ansible 2.3 is available, see https://docs.ansible.com/ansible/playbooks_variables.html#variable-precedence-where-should-i-put-a-variable