contrib/kresd: log SERVFAILs by default

5 jobs for kresd-debug-servfail in 1 minute and 17 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #496665
amd64 linux docker
test:flake8

00:00:17

passed #496664
amd64 linux docker
test:mypy

00:00:28

passed #496666
amd64 linux docker
test:pylint

00:00:34

passed #496667
amd64 linux docker
test:pytest

00:00:20

passed #496668
amd64 linux docker
test:respdiff

00:01:15