make vmwareapi driver pass quantum port-id to ESX

bug 1121349

Similar to how the libvirt and xenapi drivers need to communicate
the quantum port-id (aka the nova vif_uuid when quantum is in use)
to the compute layer in order to identify each vNIC, vmwareapi
needs to do the same.

Change-Id: I8b4bf81bfbad63e61a6ade9f0173e478b3aa45bd
Merge "make vmwareapi driver pass quantum port-id to ESX"