WIP: CI: run server and dispatcher tests on aarch64

Running tests in parallel can't work with signals.
Running tests sequentially is too slow.

Signed-off-by: Rémi Duraffort <remi.duraffort@linaro.org>
Status Job ID Name Coverage
  Test
passed #67723
aarch64
aarch64/dispatcher-debian-10

00:07:09

passed #67724
aarch64
aarch64/server-debian-10

00:07:21

passed #67721
amd64
amd64/dispatcher-debian-10

00:02:27

passed #67719
amd64
amd64/dispatcher-debian-9

00:02:43

passed #67722
amd64
amd64/server-debian-10

00:02:27

passed #67720
amd64
amd64/server-debian-9

00:02:48

 
  Analyze
passed #67726
amd64
black

00:00:32

passed #67727
amd64
code_quality

00:00:25

passed #67728
amd64
dockerfiles

00:00:23

passed #67729
amd64
job-schema

00:00:27

passed #67730
amd64
pylint

00:02:43

passed #67725
amd64-dind allowed to fail
sast

00:01:56

 
  Build
passed #67733
amd64
amd64/pkg-debian-10

00:01:16

passed #67732
amd64
amd64/pkg-debian-9

00:01:38

passed #67731
amd64
doc

00:01:16

 
  Docker
passed #69405
aarch64-dind
aarch64/lava-dispatcher

00:01:20

passed #69401
aarch64-dind
aarch64/lava-server

00:04:33

passed #67734
amd64-dind
amd64/lava-dispatcher

00:03:56

passed #67735
amd64-dind
amd64/lava-server

00:04:16

failed #69400
aarch64-dind
aarch64/lava-dispatcher

00:01:53

failed #67736
aarch64-dind
aarch64/lava-dispatcher

00:01:10

failed #67737
aarch64-dind
aarch64/lava-server

00:01:10