config: Config - full configuration
nodes: List[NodeInfo] - all nodes
fuel_openstack_creds: OSCreds - openstack creds, discovered from fuel (or None)
openstack_openrc: OSCreds - openrc used for openstack cluster
discovered_nodes: List[NodeInfo] - list of discovered nodes
reused_nodes: List[NodeInfo] - list of reused nodes from cluster
spawned_vm_ids: List[int] - list of openstack VM id's, spawned for test
__types__ = type of data in keys
info/comment : str - run comment
info/run_uuid : str - run uuid
info/run_time : float - run unix time