UCSM plugin to support trunking on VM-FEX ports

[Sandhya Dasu]

The UCSM plugin should be able to configure VM-FEX ports to trunk multiple VLANs on a single VM-FEX port. As a short term approach, the following config needs to be provided to the plugin.

trunk_networks = network_name1: vlan1, vlan2, vlan3 network_name2 : vlan4 - vlan5

When a VM-FEX port is created on a neutron network specified in the above config, the plugin would create a Port Profile on the UCSM with the VLAN-id associated with the neutron network. In addition, it would also include the VLANs provided in the above config into the Port Profile.

As a result of that, the VM-FEX port would be able to carry traffic on all of the above VMs. Also, the oprinial VLAN-id on the neutron network would be marked as the native VLAN, so any untagged packets would be tagged with this id.