How to make packit-service-tests-openshift OpenShift-less?

The way we run the packit-service-tests-openshift via oc cluster up was added a long time ago (a3f5336, 11ca8d5) and has been pretty much used the same way since then. The solution has some limitations, like:

• the cluster takes a long time to start
• it's Openshift v3
• requires docker
• runs on centos-7 node which has ansible-2.9, which we need to stay compatible with

Do we really need a full-blown OpenShift to run these tests? Wouldn't a few containers do the trick as well? I think the tests need to run just the worker, service, postgres and probably redis. Then there are a few extra volumes, pods and jobs. IMHO nothing which couldn't be done directly on the node with podman.

There are a few ways how to orchestrate them:

• "manually" with podman pod, podman volume, podman run, etc. everything - should work, but isn't there an easier way?
• podman-compose / docker-compose - we already have docker-compose.yml so we're half-way there
• podman kube play- wait, what's that?

With podman kube play you give podman your existing k8s/openshift workloads in YAML and podman "deploys" them to your local machine (instead of to a cluster).

$ git clone https://github.com/packit/deployment.git
$ cd deployment/openshift
$ podman kube play redis.yml
Volumes:
redis-pvc
Pod:
3724c8a13a4167649be482b74b4c29c406eff39f1f13a0e7aa626f4b748bc37b
Container:
2f65ece7e362b580b5f4b4ca356f1e346ad38e40cde677c30a7021b766ad75ab

$ podman ps
2f65ece7e362  quay.io/sclorg/redis-6-c9s:latest    run-redis   28 seconds ago  Up 28 seconds  0.0.0.0:6379->6379/tcp  redis-pod-redis

$ podman kube down redis.yml
Pods stopped:
3724c8a13a4167649be482b74b4c29c406eff39f1f13a0e7aa626f4b748bc37b
Pods removed:
3724c8a13a4167649be482b74b4c29c406eff39f1f13a0e7aa626f4b748bc37b

There's also an ansible module for it.

You can also run it as a systemd service

$ cd deployment/openshift
$ escaped=$(systemd-escape `pwd`/redis.yml)
$ systemctl --user start podman-kube@$escaped.service
$ systemctl --user status podman-kube@$escaped.service
● podman-kube@-home-jpopelka-git-packit-deployment-openshift-redis.yml.service - A template for running K8s workloads via podman-kube-play
     Loaded: loaded (/usr/lib/systemd/user/podman-kube@.service; disabled; preset: disabled)
     Active: active (running) since Tue 2023-02-14 17:55:23 CET; 7s ago
       Docs: man:podman-kube-play(1)
   Main PID: 78308 (podman)
      Tasks: 31 (limit: 38173)
     Memory: 29.9M
        CPU: 380ms
     CGroup: /user.slice/user-1000.slice/user@1000.service/app.slice/app-podman\x2dkube.slice/podman-kube@-home-jpopelka-git-packit-deployment-openshift-redis.yml.service
             ├─78308 /usr/bin/podman kube play --replace --service-container=true /home/jpopelka/git/packit/deployment/openshift/redis.yml

$ podman ps
340d065ba1eb  quay.io/sclorg/redis-6-c9s:latest     run-redis   2 minutes ago  Up 2 minutes  0.0.0.0:6379->6379/tcp  redis-pod-redis

$ systemctl --user stop podman-kube@$escaped.service