Added test for create_ip_address with none of network_id, device_id, nor port_id
Added test for create_ip_address with none of network_id, device_id, nor port_id

lmaycotte/quark,jkoelker/quark,roaet/quark,Cerberus98/quark,rackerlabs/quark,Cerberus98/quark,alanquillin/quark,blamarvt/quark,roaet/quark,asadoughi/quark,alanquillin/quark,lmaycotte/quark,rackerlabs/quark,insequent/quark,insequent/quark,asadoughi/quark