Add 'become' and root 'user' options to the playbook instead of using
'ansible_become' through an inventory variable.
Change-Id: I5e703e24fe0b3aed2784fbf63d0f2e8f81d44f0b
This patch consumes the centralised Ansible test scripts
implemented in https://review.openstack.org/381853
Change-Id: I486582d6793f61a08e09da8fe04203fac9c214bd