config: Config - full configuration
all_nodes: List[NodeInfo] - all nodes

fuel:
    version: List[int] - FUEL master node version
    os_creds: OSCreds - openstack creds, discovered from fuel (or None)
    nodes: List[NodeInfo] - FUEL cluster nodes

openstack_openrc: OSCreds - openrc used for openstack cluster

openstack_nodes: List[NodeInfo] - list of openstack nodes
reused_os_nodes: List[NodeInfo] - list of openstack VM, reused in test
spawned_os_nodes: List[NodeInfo] - list of openstack VM, spawned for test
ceph_nodes: List[NodeInfo] - list of ceph nodes
explicit_nodes: List[NodeInfo] - list of explicit nodes

info/comment : str - run comment
info/run_uuid : str - run uuid
info/run_time : float - run unix time

# test results
result/{id}/info : TestInfo - test information: name, cluster config, test parameters, etc.
result/{id}/measurement/{node}/{name} : List[float] - measurements data. E.g.:
    result/{id}/measurement/node-12/iops   - for BW uses iops * block_sz
    result/{id}/measurement/node-12/lat_histo

metric/{node_name}/{dev}/{metric_name} : List[float] - node metrics data. E.g.:
    metric/node-22/cpu/load
    metric/node-22/sda/read_io
    metric/node-22/eth0/data_recv