Github user serg38 commented on the issue:
https://github.com/apache/cloudstack/pull/1686
@rhtyd Somehow it works fine without this patch
curl
"http://localhost:8096//client/api?command=listVirtualMachines&listall=true&response=json"
{"listvirtualmachinesresponse":{"count":1,"virtualmachine":[{"id":"beb85d73-17cd-4de5-8c35-61f70d88e5e1","name":"TEST-3DGPU-NICO","displayname":"TEST-3DGPU-NICO","account":"admin","userid":"d557133a-3fcc-11e5-9c45-005056ad45b7","username":"admin","domainid":"5a7ffa07-3fca-11e5-9c45-005056ad45b7","domain":"ROOT","created":"2016-08-30T16:21:45-0700","state":"Stopped","haenable":false,"zoneid":"0d074f25-ed31-482f-8bc5-44c9314fc417","zonename":"ECS-NSX","templateid":"d6584e60-d500-40cd-9a33-1700a59c464c","templatename":"VMXNET3
template-287NCX","templatedisplaytext":"VMXNET3
Template","passwordenabled":false,"serviceofferingid":"0b9dab64-60ec-4c19-8a36-8725660d37d1","serviceofferingname":"Tiny
Instance","cpunumber":1,"cpuspeed":100,"memory":128,"**##
guestosid":"5aadaacc-3fca-11e5-9c45-005056ad45b7",**"rootdeviceid":0,"rootdevicetype":"ROOT","securitygroup":[],"nic":[{"id":"08e0b3fe-219f-46bb-a766-70717a15a7fd","networkid":"c05a5c09-eb29-49bc-9cfd-705becc7a909","networkname":"VLAN13"
,"netmask":"255.255.255.0","gateway":"10.140.13.1","ipaddress":"10.140.13.81","isolationuri":"vlan://13","broadcasturi":"vlan://13","traffictype":"Guest","type":"Shared","isdefault":true,"macaddress":"06:0a:d0:00:36:d9","secondaryip":[]}],"hypervisor":"VMware","instancename":"i-2-9253-VM","affinitygroup":[],"displayvm":true,"isdynamicallyscalable":false,"ostypeid":12,"tags":[]}]}}
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