Make floating ips optional for openstack instances
Make floating ips optional for openstack instances

This means we can have one terraform module for both
floating and instances on externally exposed networks.

ContainerSolutions/microservices-infrastructure,ContainerSolutions/microservices-infrastructure,bitium/mantl,CiscoCloud/mantl,mantl/mantl,sehqlr/mantl,phnmnl/mantl,bitium/mantl,CiscoCloud/microservices-infrastructure,KaGeN101/mantl,datascienceinc/mantl,KaGeN101/mantl,CiscoCloud/mantl,phnmnl/mantl,CiscoCloud/microservices-infrastructure,mantl/mantl,datascienceinc/mantl,sehqlr/mantl