Pass cluster in rolling_update call to ceph_config (backport #7645)

[mergify]

This patch is necessary to migrate older clusters which were deployed when custom names were supported.

Follow up to 3cda8e3

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This is an automatic backport of pull request #7645 done by Mergify.

[mergify]

Cherry-pick of d992c8a has failed:

On branch mergify/bp/stable-9.0/pr-7645
Your branch is up to date with 'origin/stable-9.0'.

You are currently cherry-picking commit d992c8a8.
  (fix conflicts and run "git cherry-pick --continue")
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  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   infrastructure-playbooks/rolling_update.yml

no changes added to commit (use "git add" and/or "git commit -a")

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