Add constant to L3 extension for floating ips
Add constant to L3 extension for floating ips

Add a constant string to the L3 extension to access floating ips in request and
response dictionaries

Change-Id: I161ab583f4eca3a8f0ddda1dd533780591e3423d

eayunstack/neutron,bigswitch/neutron,dims/neutron,openstack/neutron,klmitch/neutron,openstack/neutron,igor-toga/local-snat,sebrandon1/neutron,noironetworks/neutron,wolverineav/neutron,dims/neutron,bigswitch/neutron,MaximNevrov/neutron,huntxu/neutron,wolverineav/neutron,eayunstack/neutron,cloudbase/neutron,openstack/neutron,huntxu/neutron,klmitch/neutron,noironetworks/neutron,mahak/neutron,sebrandon1/neutron,mahak/neutron,igor-toga/local-snat,mahak/neutron,MaximNevrov/neutron,cloudbase/neutron