Enabled the traffic lable support the hyperv hypervisor type. Modified the physical_network_traffic_types table to introduce hyperv_network lable column.
Modified associated VO's and impls classes. Modified the List/Update/Add TrafficType command api's and response classes.
Fixed the Unit tests
fix apidocs build error
CLOUDSTACK-4923: add missing Network limits in Domain details page
(cherry picked from commit 20fd5dc84f0c7e0d639991ca1a8baffffd9538a6)