49884 - Improve nunc-stans test to detect socket errors sooner
While testing on a fresh machine (without ipv6) I noticed the ns test
would fail. This led me to improve the state of the ns stress test
code to remove the legacy atomic, and check assertions of the sockets.
https://pagure.io/389-ds-base/pull-request/49884
Author: William Brown <william@blackhats.net.au>