Docker artifact test fails with a PR to drop supervisor from the Docker image

[syuu1228]

I opened scylladb/scylladb#22883 to drop supervisor from the Docker image, but CI test failed because it missing supervisor.
The error message says:

exception=The command '/bin/bash -c apt-get update &&     echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&     apt install -y sudo &&     adduser --disabled-password --gecos "" $USER || true  &&     usermod -aG sudo $USER &&     sudo -Hu $USER sh -c "mkdir -m 700 ~/.ssh" &&     sudo -Hu $USER sh -c "echo 'mkdir -p /home/$USER/.cassandra' > ~/.ssh/rc" &&     sudo -Hu $USER sh -c "echo 'sudo test -f /root/.cqlshrc && sudo cp /root/.cqlshrc /home/$USER/.cassandra/cqlshrc' >> ~/.ssh/rc" &&     sudo -Hu $USER sh -c "echo 'sudo test -f /root/.cassandra/cqlshrc && sudo cp /root/.cassandra/cqlshrc /home/$USER/.cassandra/cqlshrc' >> ~/.ssh/rc" &&     echo "$USER  ALL=(ALL)       NOPASSWD: ALL" >> /etc/sudoers &&     apt install --no-install-recommends -y         iproute2         syslog-ng         rsync         docker-ce-cli &&     rm -rf /var/lib/apt/lists/* &&     echo "autostart=false" >> /etc/supervisord.conf.d/scylla-server.conf &&     echo "user=scylla" >> /etc/supervisord.conf.d/scylla-server.conf &&     echo "autostart=false" >> /etc/supervisord.conf.d/scylla-housekeeping.conf &&     echo "user=scylla" >> /etc/supervisord.conf.d/scylla-housekeeping.conf' returned a non-zero code: 1

https://jenkins.scylladb.com/job/releng-testing/job/artifacts/job/artifacts-docker-test/562/consoleFull#537147054fcc21424-66d2-4bd8-8e0d-9746405e5b16

So likely it failed because /etc/supervisord.conf.d is missing.

We need a way to pass the CI to merge the PR.

[fruch]

@syuu1228 the way is to fix what needed in SCT.

why this is been removed ? what is the equivalent of it ?
how manager agent going to work ?

i.e. where is the test plan for that feature ?