consolidated s390 device configuration - step 2: cleanup

[steffen-maier]

This is the final cleanup as very last packaging step after https://github.com/dracutdevs/dracut/pull/2534. The PR split was triggered by https://github.com/dracutdevs/dracut/pull/2534#issuecomment-1933744932. Intentionally only a draft PR for the time being, until Fedora packagers give a go after package updates for step 1 in 2534 could migrate existing persistent s390 device config and thus drop the depency on the removed dracut modules in this PR here.

Only the last 3 commits in here are specific to this PR, the preceding commits just carry the content of #2534 to provide the proper code base, because this PR builds on top of #2534.

Changes

Checklist

• [x] I have tested it locally
• [x] I have reviewed and updated any documentation if relevant
• [ ] I am providing new code and test(s) for it

@danimo @dtardon @haraldh @hramrach @hreinecke @jstodola @mwilck @sharkcz @smitterl @teclator

[steffen-maier]

minor clarifications on rd.zfcp.conf in man/dracut.cmdline.7.asc

[steffen-maier]

rebased onto latest https://github.com/dracutdevs/dracut/pull/2534

[steffen-maier]

rebased onto latest https://github.com/dracutdevs/dracut/pull/2534#issuecomment-2015284495

[stale[bot]]

This issue is being marked as stale because it has not had any recent activity. It will be closed if no further activity occurs. If this is still an issue in the latest release of Dracut and you would like to keep it open please comment on this issue within the next 7 days. Thank you for your contributions.

[steffen-maier]

This is still relevant. I'm going to make another change to the "parent" #2534 and then rebase this PR here once more. Because this might not happen within 7 days, I comment here to keep this PR open.

[mwilck]

@steffen-maier, maybe you should rather proceed on https://github.com/dracut-ng/dracut-ng/pull/73.