As we move configuration for zuul worker nodes out of puppet and into
DIB elements, we should keep track of what is being managed by puppet
for long-lived servers and what no longer needs to be managed for single
use workers. The openstack_project::server class wraps the
openstack_server::template class which stores configuration that is
common to both types of machines. This patch updates the backup_server
and lists class to use the openstack_project::server class, updating
class parameters where they differ between o_p:server and o_p::template.
This way we can chop down the template class and move bits into the
server class until eventually we can entirely remove the
openstack_project::single_use_slave and openstack_project::template
classes.
Change-Id: Ief997d608a3a1632ec34da34ec46a237ead761f5
1bd9635d97