[FR] - cardano-cli should validate relays information when a new SPO registers

[coot]

Internal & External

Area
cardano-cli registration

Describe the feature you'd like
cardano-cli should be more strict when accepting registration certificates. A list of common mistakes:

• registering with IP address as a domain name
• using private IP addresses
• not providing port or providing invalid port
• invalid DNS names
• register with IOG relays

We could also use cardano-ping to check that we can connect to relays. This will not capture miss configurations when the relays are running behind a NAT though, for that we'd need to design an external service.

[karknu]

• Using http or https as part of the domain name, e.g https://myfancypool.io .

[coot]

@JaredCorduan some rules could be ledger rules (applied after a future HF):

• port is not null
• http / https is not part of domain name

[github-actions]

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