vnf-id,service-instance-id,global-customer-id
vnf-id1,sample-service-instance-id,customer-id1
vnf-id2,sample-service-instance-id-1,customer-id1
vnf-id3,sample-service-instance-id-2,customer-id2
vnf-id5,sample-service-instance-id-3,customer-id3
vnf-id6,sample-service-instance-id-4,customer-id4