VOL-2153 import flow_utils from new location

Change-Id: Iecd3875574ecacd9fd2e96da9637d524724907f0
diff --git a/adaptercore/openolt_test.go b/adaptercore/openolt_test.go
index cf48cc3..91d8384 100644
--- a/adaptercore/openolt_test.go
+++ b/adaptercore/openolt_test.go
@@ -29,8 +29,8 @@
 	"sync"
 	"testing"
 
-	fu "github.com/opencord/voltha-go/rw_core/utils"
 	com "github.com/opencord/voltha-lib-go/pkg/adapters/common"
+	fu "github.com/opencord/voltha-lib-go/pkg/flows"
 	"github.com/opencord/voltha-lib-go/pkg/kafka"
 	ic "github.com/opencord/voltha-protos/go/inter_container"
 	"github.com/opencord/voltha-protos/go/openflow_13"