Functional jobs are failing due to two consecutive calls that are
calling to update the LB VIP port (finally calling to
SetLSwitchPortCommand) are not propagating the second one.
Consequently the port_name is not setted as ovn-lb-vip-<uuid> and
it is also affecting to logic when FIP is assigned to LB VIP.
Change-Id: I174a0f971426c18eaaae3133446c0750bb50dd13