Dynamic TLS selection

@matt @francislavoie would you mind helping out just a tiny bit ?:>

I have seen this thread: Mixing wildcard certificate with on_demand feature - #4 by pdnz which is exactly what I am trying to do but I already have the route53 in place.

Also in logs I can see entries like:

{"level":"info","ts":1690183666.7853959,"logger":"http.acme_client","msg":"trying to solve challenge","identifier":"test.ays-dev-tt.net","challenge_type":"dns-01","ca":"https://acme-v02.api.letsencrypt.org/directory"}