contrib/kresd: log SERVFAILs by default

5 jobs for kresd-debug-servfail in 1 minute and 15 seconds (queued for 7 seconds)
latest
Status Job ID Name Coverage
  Test
passed #496795
amd64 linux docker
test:flake8

00:00:21

passed #496794
amd64 linux docker
test:mypy

00:00:37

passed #496796
amd64 linux docker
test:pylint

00:00:37

passed #496797
amd64 linux docker
test:pytest

00:00:26

passed #496798
amd64 linux docker
test:respdiff

00:01:15