Allow use qcow2 inline compression

[krishjainx]

Provide the .img qcow2 without wrapped compression by enabling the inline compression

#1135 by @tuxtof

Spoke with @pothos

[pothos]

Started a github PR build, we should also test on Jenkins (I can do this later but if someone does it before me, also good)

[github-actions]

Build action triggered: https://github.com/flatcar/scripts/actions/runs/6312120421

[sayanchowdhury]

Jenkins CI http://jenkins.infra.kinvolk.io:8080/job/container/job/packages_all_arches/2493/cldsv/

[sayanchowdhury]

There is one failure:

 --- FAIL: systemd.journal.user (16.95s)
         cluster.go:130: "journalctl --user --unit hello.service | grep Foo" failed: output , status Process exited with status 1

[pothos]

There is one failure:

 --- FAIL: systemd.journal.user (16.95s)
         cluster.go:130: "journalctl --user --unit hello.service | grep Foo" failed: output , status Process exited with status 1

That looks unrelated

[pothos]

The jenkins build got cleaned up, can't see the results but I think it's ok to merge if the reported failure was only about an unrelated kola test.
Should we backport this to all channels?

[dongsupark]

Let's merge.
I am fine with backports.

[pothos]

Let's see how the nightly build turns out before backporting.

[pothos]

Backported