prefill module: allow a different module-loading style

Otherwise plain `modules = { 'prefill' }` will error out,
which is surprising wrt. to style used/allowed by other modules.
37 jobs for prefill-config in 46 minutes and 19 seconds (queued for 8 seconds)
Status Job ID Name Coverage
  Build
passed #303912
amd64 linux docker
archive

00:00:41

passed #303913
amd64 linux docker
build

00:00:49

passed #303914
amd64 linux docker
build-asan

00:00:49

passed #303915
docker
kres-gen

00:00:46

 
  Test
passed #303916
docker delayed
build:darwin

00:01:40

passed #303917
amd64 linux docker
deckard

00:02:19

passed #303918
docker delayed
doc

00:00:56

passed #303919
dind
docker

00:02:27

passed #303920
docker delayed
lint:other

00:00:52

passed #303921
amd64 linux docker delayed
lint:pedantic

00:01:08

passed #303922
amd64 linux docker
lint:scan-build

00:02:15

passed #303923
amd64 linux docker
lint:tidy

00:03:00

passed #303924
privileged
pkg:epel-7

00:02:15

passed #303925
privileged
pkg:fedora-29

00:03:15

passed #303926
amd64 linux docker
respdiff:basic

00:02:34

passed #303927
amd64 linux docker delayed
test:valgrind

00:01:49

 
  Extended
failed #303952
respdiff
fwd-tls6-kresd.udp6

00:10:52

passed #303953
respdiff
fwd-udp6-kresd.udp6

00:11:54

failed #303957
respdiff
fwd-udp6-unbound.tcp6

00:35:25

failed #303958
respdiff
fwd-udp6-unbound.tls6

00:36:25

failed #303956
respdiff
fwd-udp6-unbound.udp6

00:18:54

failed #303955
respdiff
iter.tls6

00:22:25

passed #303954
respdiff
iter.udp6

00:20:24

passed #303928
amd64 linux docker
pytests

00:04:13

passed #303959
respdiff
resperf:fwd-tls6.udp-asan

00:14:19

passed #303960
respdiff
resperf:fwd-udp6.udp-asan

00:19:19

passed #303961
respdiff
resperf:iter.udp-asan

00:16:19

failed #303929
respdiff
fwd-tls6-kresd.udp6

00:00:46

failed #303930
respdiff
fwd-udp6-kresd.udp6

00:00:49

failed #303934
respdiff
fwd-udp6-unbound.tcp6

00:00:49

failed #303935
respdiff
fwd-udp6-unbound.tls6

00:01:19

failed #303933
respdiff
fwd-udp6-unbound.udp6

00:01:19

failed #303932
respdiff
iter.tls6

00:00:48

failed #303931
respdiff
iter.udp6

00:01:20

failed #303936
respdiff
resperf:fwd-tls6.udp-asan

00:01:19

failed #303937
respdiff
resperf:fwd-udp6.udp-asan

00:00:48

failed #303938
respdiff
resperf:iter.udp-asan

00:01:19

 
Name Stage Failure
failed
fwd-udp6-unbound.tls6 Extended
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
$ cat respdiff_commitdir/$RESPDIFF_TEST/*histogram.tar.gz | tar -xf - -i ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=162400 revision=a987417a version=12.2.0
./j*: found 18 matching files

./*.png: found 2 matching files

./*histogram/*: found 6 matching files

Uploading artifacts to coordinator... ok
id=303958 responseStatus=201 Created token=yYqgc-61
ERROR: Job failed: exit status 1
failed
fwd-udp6-unbound.tcp6 Extended
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
$ cat respdiff_commitdir/$RESPDIFF_TEST/*histogram.tar.gz | tar -xf - -i ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=162169 revision=a987417a version=12.2.0
./j*: found 18 matching files

./*.png: found 2 matching files

./*histogram/*: found 6 matching files

Uploading artifacts to coordinator... ok
id=303957 responseStatus=201 Created token=HNFWzzsX
ERROR: Job failed: exit status 1
failed
iter.tls6 Extended
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
$ cat respdiff_commitdir/$RESPDIFF_TEST/*histogram.tar.gz | tar -xf - -i ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=160083 revision=a987417a version=12.2.0
./j*: found 19 matching files

./*.png: found 2 matching files

./*histogram/*: found 7 matching files

Uploading artifacts to coordinator... ok
id=303955 responseStatus=201 Created token=X8TGQjMu
ERROR: Job failed: exit status 1
failed
fwd-udp6-unbound.udp6 Extended
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
$ cat respdiff_commitdir/$RESPDIFF_TEST/*histogram.tar.gz | tar -xf - -i ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=159178 revision=a987417a version=12.2.0
./j*: found 18 matching files

./*.png: found 2 matching files

./*histogram/*: found 6 matching files

Uploading artifacts to coordinator... ok
id=303956 responseStatus=201 Created token=EYynTRRu
ERROR: Job failed: exit status 1
failed
fwd-tls6-kresd.udp6 Extended
$ cp -t . respdiff_commitdir/*$RESPDIFF_TEST*.png ||:
$ cat respdiff_commitdir/$RESPDIFF_TEST/*histogram.tar.gz | tar -xf - -i ||:
Uploading artifacts...
Runtime platform arch=amd64 os=linux pid=157381 revision=a987417a version=12.2.0
./j*: found 18 matching files

./*.png: found 2 matching files

./*histogram/*: found 6 matching files

Uploading artifacts to coordinator... ok
id=303952 responseStatus=201 Created token=s2k7MDsk
ERROR: Job failed: exit status 1