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

nova/tests/test_vmwareapi.py

@@ -60,6 +60,7 @@ class VMwareAPIVMTestCase(test.TestCase):
                                'bridge_interface': None,
                                'injected': True},
                           {'broadcast': '192.168.0.255',
+                           'id': 'foo',
                            'dns': ['192.168.0.1'],
                            'gateway': '192.168.0.1',
                            'gateway_v6': 'dead:beef::1',