Adding support for Azure DNS See https://docs.microsoft.com/en-us/azure/dns/
... didn't see this line in spellcheck ... :S
fixed remaining issues from shellcheck
replaced tab with space
sed -E
grep -q
printf -v
Update ClouDNS.net API doc to show that CLOUDNS_AUTH_ID and CLOUDNS_AUTH_PASSWORD will be saved in ~/.acme.sh/account.conf