VOL-2138 Use v2 import paths for voltha-lib-go

Change-Id: I853dcce79c4defbe3140f3893651a2f50d63e053
diff --git a/common/core/northbound/grpc/default_api_handler.go b/common/core/northbound/grpc/default_api_handler.go
index 2d374eb..bf5a499 100644
--- a/common/core/northbound/grpc/default_api_handler.go
+++ b/common/core/northbound/grpc/default_api_handler.go
@@ -19,7 +19,7 @@
 	"context"
 	"errors"
 	"github.com/golang/protobuf/ptypes/empty"
-	"github.com/opencord/voltha-lib-go/pkg/log"
+	"github.com/opencord/voltha-lib-go/v2/pkg/log"
 	"github.com/opencord/voltha-protos/go/common"
 	"github.com/opencord/voltha-protos/go/openflow_13"
 	"github.com/opencord/voltha-protos/go/voltha"