[VOL-3141] Enhance Context with OpenTracing Span

Change-Id: I966e235ec5fcb70812f75b98a97aa65dba8c04a2
diff --git a/internal/pkg/core/openolt.go b/internal/pkg/core/openolt.go
index 702a1a2..453b9da 100644
--- a/internal/pkg/core/openolt.go
+++ b/internal/pkg/core/openolt.go
@@ -360,7 +360,7 @@
 	resp := new(voltha.ReturnValues)
 	log.Infow("Get_ext_value", log.Fields{"device-id": deviceID, "onu-id": device.Id})
 	if handler := oo.getDeviceHandler(deviceID); handler != nil {
-		if resp, err = handler.getExtValue(device, valueparam); err != nil {
+		if resp, err = handler.getExtValue(ctx, device, valueparam); err != nil {
 			log.Errorw("error-occurred-during-get-ext-value", log.Fields{"device-id": deviceID, "onu-id": device.Id,
 				"error": err})
 			return nil, err