Add additional DNS01 challenge resolvers

[mrsimonemms]

The current DNS01 challenge resolvers are Google and Azure, with an optional in-cluster (self-signed cert - see #8559).

Required

• Route53

Recommended

• DigitalOcean
• CloudFlare

Optional

• ACME-DNS - may be affected by the documented limitations as would require 3 domains ($DOMAIN, *.$DOMAIN and *.ws.$DOMAIN)
• Akamai
• RFC-2136
• Webhook

[mrsimonemms]

Closing as cert-manager is now no longer configured by KOTS /cc @gitpod-io/engineering-self-hosted

[Pothulapati]

@mrsimonemms We don't want to install cert-manager but we still create the Certificate object and there we need the DNS01 challenge right? 🤔

Even #8785 doesn't remove the DNS101 config, right now!

[mrsimonemms]

No. I think this is outside of what we want to manage. Setting up an Issuer or ClusterIssuer is tricky so the user's can do it themselves. They can then configure their own Certificate and then we take over from just installing Gitpod