ci: optimize check-integration

py.test now runs Deckard tests in parallel so it does not make sense to
run py.test instances in parallel (using make), it just clutters output.
18 jobs for ci-make-check in 8 minutes and 6 seconds (queued for 12 seconds)
Status Job ID Name Coverage
  Build
passed #147588
docker linux amd64
build:clang:linux:amd64

00:00:52

passed #147587
docker linux amd64
build:linux:amd64

00:00:53

passed #147589
docker linux amd64 allowed to fail
srpm

00:00:25

 
  Test
passed #147596
docker linux amd64
deckard:linux:amd64

00:06:43

passed #147603
privileged
distro:epel-7

00:02:08

passed #147602
privileged
distro:fedora-27

00:02:57

passed #147595
docker
doc

00:00:47

passed #147594
docker linux amd64
installcheck:linux:amd64

00:01:26

passed #147597
docker linux amd64
installcheck:valgrind:linux:amd64

00:01:57

passed #147591
docker
lint:c

00:02:41

failed #147592
docker allowed to fail
lint:clang-scan-build

00:01:09

passed #147590
docker
lint:lua

00:00:42

passed #147600
docker linux amd64
respdiff:iter:tcp:linux:amd64

00:04:44

passed #147601
docker linux amd64
respdiff:iter:tls:linux:amd64

00:04:50

passed #147599
docker linux amd64
respdiff:iter:udp:linux:amd64

00:04:08

passed #147593
docker linux amd64
test:linux:amd64

00:01:23

passed #147598
docker linux amd64
test:linux:amd64:valgrind

00:01:17

 
  Coverage
passed #147604
docker linux amd64
coverage

00:00:24

70.1%
 
Name Stage Failure
failed
lint:clang-scan-build Test
  CCLD	modules/stats/stats.so
CCLD modules/bogus_log/bogus_log.so
CCLD modules/hints/hints.so
scan-build: 29 bugs found.
scan-build: Run 'scan-view /builds/knot/knot-resolver/scan-results/2018-06-28-115328-14-1' to examine bug reports.
Uploading artifacts...
scan-results: found 34 matching files
Uploading artifacts to coordinator... ok
id=147592 responseStatus=201 Created token=xGmncFSR
ERROR: Job failed: exit code 1