[kola testiso] iscsi - fix test timeout

[jbtrystram]

#3705 should not have been merged 😬
targetd.sock does not exist, even when running systemctl enable targetd.socket so rely on targetcli to succeed instead.
Tested on x86

[jbtrystram]

failing test is unrelated to this change :
[2024-02-05T09:47:55.332Z] --- FAIL: ext.config.networking.ifname-karg.everyboot-systemd-link-file (603.62s)

[travier]

Is targetcli ls failing with a non zero exit code when it's not ready? I can not find this in https://www.mankier.com/8/targetcli.

[travier]

How did this test pass in the PR before? Edit: The test is currently denylisted.

[jbtrystram]

Is targetcli ls failing with a non zero exit code when it's not ready? I can not find this in mankier.com/8/targetcli.

I did some additional testing and it seems to work (returning zero when ready) but I can't reproduce a slow run with a debug where it's not ready when called. I get non zero exit codes when trying locally with a crashed targetd so that should work :

$ podman exec -it -l targetcli || echo $?
Could not load module: configfs
255

[jlebon]

Weird, I was going off of https://github.com/open-iscsi/targetcli-fb/blob/7d51e94b2bae534e21a3f46a35eed95195ad323d/systemd/targetclid.socket#L6, but possibly systemd acts differently within a container wrt sockets.target?

Anyway, LGTM.