openstack-ansible-os_trove/tasks at 6ec6dc71c0526c1b0f1997494527d1a902f40e7e - openstack-ansible-os_trove - OpenDev: Free Software Needs Free Tools

Starting in Ansible 2.0, the get_url [1] module provides the
ability for a checksum to be provided to the get_url module
which will be verified against the local destination file
and the task skipped if it matches.
[1] http://docs.ansible.com/ansible/get_url_module.html
This patch implements the use of this functionality.
The ability to ignore a venv download failure is also removed
as this is not necessary or desirable. It is better for the
download to fail and the playbook execution to stop immediately
so that the failure point is exposed.
Change-Id: Iea1e6428d5c2e22eb6bce71d3ad5350864b536e1