Investigate support for wildcard certificates

[lmsurpre]

Let's Encrypt has released support for wildcard certificates: https://community.letsencrypt.org/t/acme-v2-production-environment-wildcards/55578

What does this mean for bluemix-letsencrypt?
It sounds like they will issue only a DNS challenge and the DNS part was already out-of-scope for bluemix-letsencrypt. Maybe bluemix-letsencrypt isn't even needed any more if users move to this functionality?

IBM Cloud has also introduced https://console.bluemix.net/catalog/services/certificate-manager which should be looked at as well.