This script needs:
- a list of domains managed by GANDI LiveDNS
- a list of IP addresses of clusters (like in tags/*/ips.txt)
It will replace the current configuration for these
domains so that they point to the clusters.
The apex of each domain and a wildcard entry will
have round-robin records pointing to all the nodes
of the cluster.
In addition, there will be records node[1234...]
pointing to each individual node.
