At the moment, we do deploy openrc file on conductors and delegate
task to them. At the moment there is no good reason to do so,
since we're actively utilizing service_setup_host for all interactions
with API. With that we also replace `openstack` commands with native
compute_service_info module that provides all information we need.
Change-Id: I016ba4c5dd211c5165a74a6011da7bb384c7a82a