Introduce wildcardhostname field

[stevesloka]

What type of PR is this?
/kind bug

Optionally add one or more of the following kinds if applicable:
/kind api-change

What this PR does / why we need it:

Update the HTTPRequestRedirectFilter.Hostname to use a Hostname type which validates the value cannot
contain wildcard characters. Updates all other references which used Hostname to use WildcardHostname
which does allow for wildcard characters.

Signed-off-by: Steve Sloka [email protected]

Which issue(s) this PR fixes:
Fixes #949

Does this PR introduce a user-facing change?:

Introduced PreciseHostname which prevents wildcard characters in relevant Hostname values. 

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[k8s-ci-robot]

Hi @stevesloka. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[hbagdi]

Can we add a test case 'wildcard hostname on the redirect filter fails'? You can do so by adding it to hack/invalid-examples.

[hbagdi]

/ok-to-test

[robscott]

/check-cla
/lgtm
/hold for @jpeach to comment on thread

[stevesloka]

@hbagdi I added an invalid test case for the redirect hostname.

[youngnick]

LGTM once the field name changes are done as discussed.

[robscott]

@stevesloka I was about to release 0.4.1, but realized this change also probably belongs in that release. Agree with @youngnick that this PR LGTM once that final name change gets in.

[stevesloka]

@robscott sorry for loosing track of this one, I've updated the PR with the PreciseHostname. Thanks!

[robscott]

Thanks!

/lgtm
/approve

[robscott]

/lgtm

[jpeach]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jpeach, robscott, stevesloka

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[robscott]

Woops, we missed the hold on this.

/hold cancel