Only search for floating ips if the server has them
Only search for floating ips if the server has them

We have a server dict, which has an addresses dict. If the addresses
dict does not list any floating ips, then there is no need to spend the
API call to look for the fip ids needed to do the delete.

Change-Id: Iaf7583fe29bd197a59ae2728fd52d8de2ac1d411

openstack-infra/shade,openstack/python-openstacksdk,openstack-infra/shade,dtroyer/python-openstacksdk,dtroyer/python-openstacksdk,stackforge/python-openstacksdk,openstack/python-openstacksdk,stackforge/python-openstacksdk