$ tacker vnf-show --show-details vnf1
+-------+-----------------------------------------------------------------------------+
| Field | Value                                                                       |
+-------+-----------------------------------------------------------------------------+
| CP1   | {"type": "OS::Neutron::Port", "id": "1171fb75-5c8a-4388-b641-520dc503f5ec"} |
| CP2   | {"type": "OS::Neutron::Port", "id": "19dad3b5-35c0-4c6e-adc2-1424fcadba23"} |
| CP3   | {"type": "OS::Neutron::Port", "id": "55700416-e84d-410d-8169-ff5a37c60903"} |
| VDU1  | {"type": "OS::Nova::Server", "id": "acc9d87a-7243-4162-a492-6079afca6139"}  |
+-------+-----------------------------------------------------------------------------+

Calling get_vnf_details from plugin.py L618 returns
 vnf_details = {'resource_details': {u'VDU1': {'type': u'OS::Nova::Server', 'id': u'acc9d87a-7243-4162-a492-6079afca6139'}, u'CP1': {'type': u'OS::Neutron::Port', 'id': u'1171fb75-5c8a-4388-b641-520dc503f5ec'}, u'CP2': {'type': u'OS::Neutron::Port', 'id': u'19dad3b5-35c0-4c6e-adc2-1424fcadba23'}, u'CP3': {'type': u'OS::Neutron::Port', 'id': u'55700416-e84d-410d-8169-ff5a37c60903'}}}