Replace eventlet.greenpool with concurrent.futures.ThreadPoolExecutor
in the BMC discovery script, using as_completed() for proper exception
propagation and main-thread result aggregation to avoid race conditions.
Remove dead eventlet socket compatibility code (.fd attribute checks)
from the IPMI session layer, and clean up stale eventlet references
in comments across the codebase.
Closes: xcat2/confluent#197
Vinícius Ferrão
a69d828e69