[VOL-5488] fetch nni-port ID from voltdevice

Change-Id: I12a81dbb4e45cb4728f49d1d6324afc1ed6260b1
Signed-off-by: Akash Reddy Kankanala <akash.kankanala@radisys.com>
diff --git a/internal/pkg/application/vnets_test.go b/internal/pkg/application/vnets_test.go
index 7016667..9fa1e3f 100644
--- a/internal/pkg/application/vnets_test.go
+++ b/internal/pkg/application/vnets_test.go
@@ -2125,6 +2125,7 @@
 				assert.NotNil(t, got)
 			case "BuildDsDhcp6Flows":
 				voltDev.NniPort = []string{"16777216"}
+				voltDev.Ports.Store("16777216", voltPort)
 				va.DevicesDisc.Store("SDX6320031", voltDev)
 				va.DevicesConfig.Store("SDX6320031", deviceConfig)
 				got, err := vpv.BuildDsDhcp6Flows()