I've been slowly decoupling the provisioning role from infra-ansible
into its own role:
http://git.openstack.org/cgit/openstack/ansible-role-cloud-launcher
Now that it has feature parity and it is gating in OpenStack CI,
just use it and remove setup_openstack_resources roles.
Change-Id: I4810d0bdb57cf1f069f20fb133f5f2afe15e4e87
Rather than expecting a user to create keypair prior to run
infra-ansible, just make infra-ansible to create the keypair
per the variable passed as keypair_contents on infra_config.yml.
Role provision_infra_servers not only creates instances, but also
volumes and now kepairs, thus also renaming the provision_infra_servers
role and playbook to setup_openstack_resources.
Change-Id: I810edf1b8956d2f5653aa789ce908428c2904549