Able to export config of additional domain set by additionalSans

[SCLogo]

/kind feature

1. Describe IN DETAIL the feature/behavior/change you would like to see.

Currently we can set additional domains to access apiserver using proxy or with different domain. The original one (what we set during clustre create is immutable as I know), so when we have issue with cert renew or access that domain to change things, it would be good if we could export the config using the alternative domain we set

2. Feel free to provide a design supporting your feature request. E.g. Select domain with --api-domain

[olemarkus]

You can change the exported domain by settings spec.masterPublicName in the cluster spec. Does this satisfy your needs?

[SCLogo]

So only spec.masterInternalName is immutable and PublicName is changeable ? That would solve my issue yes. Going to test it in the comming weeks.

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[hakman]

Seems pretty much fixed. If there's anything else please reopen.