Add guidances for TLDs and Wildcard specification in YAML

[distributethe6ix]

There were a few issues that requested how to specify WILDCARDS in YAML for Top-level-domains (TLDs). This is not currently supported and requires someone doing this to own all TLDs.

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[Arhell]

@distributethe6ix
Pls sign the CLA in order for the PR to be reviewed.

[RA489]

/check-cla

[distributethe6ix]

Fixes kubernetes/kubernetes#41881

[distributethe6ix]

CLA has been signed

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[distributethe6ix]

/assign @zacharysarah

[sftim]

Not sure this is needed @distributethe6ix

“Wildcard matches require the HTTP host header is equal to the suffix of the wildcard rule.” already covers this, I think.

[celestehorgan]

@distributethe6ix

Suggested change

	With respect to Wildcards and Top-level-domains (eg. .com, .ca, .org, .edu), there is
	currently no support for specifying a wildcard in the format of `subdomain.domain.*`.
	This would assume that the domain owner has access to and purchased all
	Top-level-domains for their domain in order for this to be supported.

Remove this paragraph (accept the above suggestion) and we can merge this in?

[distributethe6ix]

“Wildcard matches require the HTTP host header is equal to the suffix of the wildcard rule.” does not satisfy what the original issue was asking for.

With respect to Ingress, you cannot specify a Top level domain wild-card, hence why I added this bit into the documentation. It's not clear otherwise.

The top-level-domain is the ".com, .ca, .org, .io" for example, is not part of the "host-field"

The wildcard functionality does not address situations where someone who has purchased multiple domains can route accordingly to .ca, .com.

There is no option for host.foo.* <--- Wildcard at the TLD...

Happy to hop on a zoom/discord chat to further provide clarification.

[tengqm]

@distributethe6ix Please respond to the comments so we can move on with this.

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/lifecycle stale

[kbhawkey]

👋 @distributethe6ix .
Since there has been no recent activity, I plan to close this pull request.
/close

[k8s-ci-robot]

@kbhawkey: Closed this PR.

In response to this:

👋 @distributethe6ix .
Since there has been no recent activity, I plan to close this pull request.
/close

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