VOL-3589 Update voltha go to support new version v4 of voltha protos

Change-Id: I32074b5c05b08f8ebd2205f8dc2af225bff465cc
diff --git a/rw_core/test/utils.go b/rw_core/test/utils.go
index f2e6229..d9d42df 100644
--- a/rw_core/test/utils.go
+++ b/rw_core/test/utils.go
@@ -24,14 +24,14 @@
 	"github.com/opencord/voltha-go/rw_core/config"
 	"github.com/opencord/voltha-go/rw_core/core/adapter"
 	cm "github.com/opencord/voltha-go/rw_core/mocks"
-	"github.com/opencord/voltha-lib-go/v3/pkg/adapters"
-	com "github.com/opencord/voltha-lib-go/v3/pkg/adapters/common"
-	"github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore"
-	"github.com/opencord/voltha-lib-go/v3/pkg/kafka"
-	"github.com/opencord/voltha-lib-go/v3/pkg/log"
-	mock_etcd "github.com/opencord/voltha-lib-go/v3/pkg/mocks/etcd"
-	"github.com/opencord/voltha-lib-go/v3/pkg/version"
-	"github.com/opencord/voltha-protos/v3/go/voltha"
+	"github.com/opencord/voltha-lib-go/v4/pkg/adapters"
+	com "github.com/opencord/voltha-lib-go/v4/pkg/adapters/common"
+	"github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/v4/pkg/kafka"
+	"github.com/opencord/voltha-lib-go/v4/pkg/log"
+	mock_etcd "github.com/opencord/voltha-lib-go/v4/pkg/mocks/etcd"
+	"github.com/opencord/voltha-lib-go/v4/pkg/version"
+	"github.com/opencord/voltha-protos/v4/go/voltha"
 	"github.com/phayes/freeport"
 	"github.com/stretchr/testify/assert"
 	"google.golang.org/grpc/codes"