DDNS Service
Since we occasionally need an ipv4 address we'll make one.
This creates and keeps updated ipv4.reeselink.com.
This requires the aws cli to be installed on each node with credentials that can modify records in route53.
https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html
ansible-playbook -i ansible/inventory.yaml ddns/install_ddns.yaml