VOL-2139 update tests to use voltha-lib-go instead of voltha-go

Change-Id: I7581bf051e8aede6c46abb894b14c5871b713378
diff --git a/tests/core/concurrency/core_concurrency_test.go b/tests/core/concurrency/core_concurrency_test.go
index d183a3a..5a38e8b 100644
--- a/tests/core/concurrency/core_concurrency_test.go
+++ b/tests/core/concurrency/core_concurrency_test.go
@@ -23,8 +23,8 @@
 	"fmt"
 	"github.com/golang/protobuf/ptypes/empty"
 	"github.com/google/uuid"
-	"github.com/opencord/voltha-go/common/log"
 	com "github.com/opencord/voltha-lib-go/pkg/adapters/common"
+	"github.com/opencord/voltha-lib-go/pkg/log"
 	"github.com/opencord/voltha-protos/go/common"
 	"github.com/opencord/voltha-protos/go/voltha"
 	"github.com/stretchr/testify/assert"