contrib/kresd: log SERVFAILs by default

5 jobs for kresd-debug-servfail in 3 minutes and 11 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Test
passed #496169
amd64 linux docker
test:flake8

00:01:32

passed #496168
amd64 linux docker
test:mypy

00:01:51

passed #496170
amd64 linux docker
test:pylint

00:01:53

passed #496171
amd64 linux docker
test:pytest

00:01:48

passed #496172
amd64 linux docker
test:respdiff

00:03:11