Using unique values to prevent inter-test interference
By using different values for username and address, there's less of a chance of individual tests affecting the others (like what we've seen happen in Github Actions).
daryl herzmann <akrherz@iastate.edu>
5719a411aab197d2ddef3568528db61775f9312b
Merge pull request #1847 from akrherz/ubuntu
use older ubuntu for connectivity tests