Add support for wildcard certificates - Tricky

[pcbaldwin]

Wildcard support is coming to Let's Encrypt on February 27, 2018. There's one gotcha -- only the DNS validation protocol will be available:

Wildcard certificates will be offered free of charge via our upcoming ACME v2 API endpoint. We will initially only support base domain validation via DNS for wildcard certificates, but may explore additional validation options over time.

That means an end user will have to create a DNS TXT record for both creation and renewals. There are some plugins available to automate this for some providers (e.g. Amazon Route 53, DigitalOcean DNS). Integration with ClearCenter DNS should be possible though.

To investigate further.