From Newton onwards we're able to take advantage of
the Ansible package module, instead of conditionally
executing the apt or yum module.
Implementing this is an optimisation which we can do
in master and backport to stable/newton,
reducing the execution time.
Reference: http://docs.ansible.com/ansible/package_module.html
Change-Id: Ib5377494eaea1540fc72942f01f088feb6b745d4
Related-Bug: #1642654
5c8038860d