Document how to add or increase floating_IPs via puppet

[robertstarmer]

Says it all.

[robertstarmer]

You can increase floating ip addresses in CIDR chunks, but you loose the "network" (lowest IP) and "broadcast" (highest IP) of the group. Simply:
nova-manage floating create {additional_range} --pool={pool_name, which is nova by default}

A new pool can also be created, and is available to all projects.

It does not appear to be possible to "over-write" the original pool with a larger pool.