UI > Infrastructure > clusters > Add cluster dialog > change variable name for Nexus DVS fields to be more intuitive.
CLOUDSTACK-4089: UI > zone wizard > VMware hypervisor > physical network > edit Public/Guest traffic type > vSwitchType dropdown > set default option upon configuration 'vmware.use.dvswtich' and 'vmware.use.nexus.vswitch'.
CLOUDSTACK-4089: UI > zone wizard > VMware hypervisor > physical network > edit traffic type > set default value for vSwitchName field upon selected vSwitchType.