There is currently no CI testing of support for Letsencrypt/ACME
in Openstack-Ansible. Adding testing first requires a suitable CA
and we cannot use the LE staging environment as it cannot be
guaranteed to have connectivity, and there is also no reasonable
DNS entry that will work universally for all AIO/CI builds.
This patch deploys Step-CA locally on the deployment/AIO node
and configures a sufficiently functional ACME API endpoint and root
CA.
Change-Id: Ib0770ed20c12111dacc6bb63436d0b58d108b853
d1e27389b1