Add default_client_name in Nova::FloatingIPAssoc
Add default_client_name in Nova::FloatingIPAssoc

default_client_name has been missed, so stack fails
to delete, if server, from which floating ip association
depends, not exist.

Change-Id: I01bb91f8afaeb483e1a4bb55653dc3189a62bf12
Closes-bug: #1396982

dims/heat,steveb/heat,cryptickp/heat,takeshineshiro/heat,jasondunsmore/heat,srznew/heat,maestro-hybrid-cloud/heat,rdo-management/heat,pratikmallya/heat,cryptickp/heat,jasondunsmore/heat,noironetworks/heat,openstack/heat,dragorosson/heat,miguelgrinberg/heat,gonzolino/heat,miguelgrinberg/heat,rdo-management/heat,srznew/heat,pshchelo/heat,pshchelo/heat,openstack/heat,cwolferh/heat-scratch,takeshineshiro/heat,pratikmallya/heat,gonzolino/heat,steveb/heat,rh-s/heat,noironetworks/heat,dragorosson/heat,maestro-hybrid-cloud/heat,rh-s/heat,dims/heat,cwolferh/heat-scratch