Add test enforcing host references in redemption domains

[gbrodman]

Domains in the redemption grace period can still be restored, so hosts
referencing them cannot be deleted. Fortunately this is already the
case. This just adds a test.

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This change is 

[CydeWeys]

You can't outsource all your thinking to the AI ...

We can't prohibit a domain restore operation during the redemption grace period. It's part of our mandated ICANN lifecycle. The resolution that makes sense to me is restoring the domain, but with the now-deleted host(s) removed. The domain has to be restorable, then it's up to the registrar to put new nameservers on it that are still valid.

[gbrodman]

You can't outsource all your thinking to the AI ...

We can't prohibit a domain restore operation during the redemption grace period. It's part of our mandated ICANN lifecycle. The resolution that makes sense to me is restoring the domain, but with the now-deleted host(s) removed. The domain has to be restorable, then it's up to the registrar to put new nameservers on it that are still valid.

I'm a bit insulted that you'd think I outsourced my thinking to the AI.

It's not as clear as that. The RFCs also forbid changing a domain as part of a domain:restore.

From 3915 4.2.5:
"
The requirement to provide at least one domain:add, domain:rem, or domain:chg element is updated by this extension such that at least one empty domain:add, domain:rem, or domain:chg element MUST be present if this extension is specified within an command. This requirement is updated to disallow the possibility of modifying a domain object as part of redemption grace period recovery processing.
"

And generally it's better to have loud failures than quiet modifications.

[gbrodman]

This is moot. We forbid host deletion. But just in case this'll add a test.

[CydeWeys]

@CydeWeys reviewed 1 file and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on gbrodman).