Currently Cloudforms can return a mix of IPv4 and IPv6 addresses in the
ipaddresses field and this mix comes in a "random" order (that is the
first entry may be IPv4 sometimes but IPv6 other times). If you wish to
always use IPv4 for the ansible_ssh_host value then this is problematic.
This change adds a new prefer_ipv4 flag which will look for the first
IPv4 address in the ipaddresses list and uses that instead of just the
first entry.