[VOL-2149] Only care about flows for UNI port 0 until we support
multiple UNIs

Change-Id: I20079ceb20bfd162aecfd105b134206a6afdef37
diff --git a/internal/bbsim/types/interfaces.go b/internal/bbsim/types/interfaces.go
index c408697..2921a42 100644
--- a/internal/bbsim/types/interfaces.go
+++ b/internal/bbsim/types/interfaces.go
@@ -16,7 +16,9 @@
 
 package types
 
-import "github.com/opencord/voltha-protos/go/openolt"
+import (
+	"github.com/opencord/voltha-protos/go/openolt"
+)
 
 // represent a gRPC stream
 type Stream interface {