dnssec / TLSA support

[JasperWallace]

Would be nice to be able to check for DNSSEC and TLSA record suport.

See Swede for a tool that can do TLSA checking, however it dosen't do starttls:

https://github.com/pieterlexis/swede/

[stitch]

Does this do what you want? https://github.com/dotse/dnscheck