CMD new TLS options to manage cipher suites and TLS version

[kumirska]

Added CMD options to manage TLC options

• tls-cipher-suites
• min-tls-version

[cert-manager-prow]

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[cert-manager-prow]

Hi @kumirska. Thanks for your PR.

I'm waiting for a cert-manager 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[cert-manager-prow]

Thanks for your pull request. Before we can look at it, you'll need to add a 'DCO signoff' to your commits.

📝 Please follow instructions in the contributing guide to update your commits with the DCO

Full details of the Developer Certificate of Origin can be found at developercertificate.org.

The list of commits missing DCO signoff:

• 243325f CMD new options
• 365a07c Parse arguments with a list of cipher suite IDs from the passed cipher suite names
• 6d0c480 Parse arguments with a list of cipher suite IDs from the passed cipher suite names

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[erikgb]

Please fix the DCO, ref. https://github.com/cert-manager/trust-manager/blob/main/CONTRIBUTING.md#dco-sign-off

In general, I think we should use the Go defaults if no value provided by user for these new flags. Mainly to avoid maintaining the default ciphers and min TLS version.

[erikgb]

I don't think we should default the cipher suites explicity. Instead we should use the default in Go if no flag given - as we do right now.

[cert-manager-prow]

PR needs rebase.

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