VOL-2017 library code was moved to voltha-lib-go

Change-Id: Ia4b27695cf7ec3377a64572972998d52b70a0a5f
diff --git a/common/core/northbound/grpc/default_api_handler.go b/common/core/northbound/grpc/default_api_handler.go
index 6ac7599..2d374eb 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-go/common/log"
+	"github.com/opencord/voltha-lib-go/pkg/log"
 	"github.com/opencord/voltha-protos/go/common"
 	"github.com/opencord/voltha-protos/go/openflow_13"
 	"github.com/opencord/voltha-protos/go/voltha"