Add floating-ip batching settings to clouds.yaml
Add floating-ip batching settings to clouds.yaml

Batching floating-ip calls like we batch the server calls is a nice
thing to do for our clouds, but needs a config setting. We should test
that things work with that setting, otherwise we may break things.

Change-Id: Idcd035b28919065f5f8c1dea7e271e1d0415100c

Tesora/tesora-nodepool,Tesora/tesora-nodepool