doc about new option default-cleanup-policy

[RomanenkoDenys]

This is doc part of cert-manager/cert-manager#5158

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[maelvls]

Thanks for this PR! I left a couple of minor comments.

I changed and the base branch to release-next and rebased on top of it.

[maelvls]

/approve

[jetstack-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: maelvls, RomanenkoDenys

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[RomanenkoDenys]

Thanks for this PR! I left a couple of minor comments.

I changed and the base branch to release-next and rebased on top of it.

Thank you, i apply all suggestions !

[maelvls]

Updating the API reference documentation is quite tricky because the scripts/gendocs/generate script hardcodes the "target" branch from which the docs will be generated. You can skip updating the API reference page in this PR.

[RomanenkoDenys]

Updating the API reference documentation is quite tricky because the scripts/gendocs/generate script hardcodes the "target" branch from which the docs will be generated. You can skip updating the API reference page in this PR.

I cannot update api reference in this PR

[maelvls]

Thank you for adding the documentation. Apart from two suggestion, it looks good to go.

Maybe it would require a bit more context as to why someone would use that feature, but the current documentation is already good.

I'll LGTM after the suggestion is reviewed.

[jetstack-bot]

PR needs rebase.

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