2020-02-22 Change sign_string to use openssl asn1parse (better fix for #424)
2020-02-23 Add dig to config check for systems without drill (ubuntu)
2020-03-11 Use dig +trace to find primary name server and improve dig parsing of CNAME
2020-03-12 Fix bug with DNS validation and multiple domains (#524)
2020-03-24 Find primary ns using all dns utils (dig, host, nslookup)
2020-03-23 Fix staging server URL in domain template