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

Change-Id: I7581bf051e8aede6c46abb894b14c5871b713378
diff --git a/tests/afrouter/tester.go b/tests/afrouter/tester.go
index 94972ed..f82745d 100644
--- a/tests/afrouter/tester.go
+++ b/tests/afrouter/tester.go
@@ -26,7 +26,7 @@
 	"fmt"
 	"github.com/golang/protobuf/proto"
 	pb "github.com/golang/protobuf/protoc-gen-go/descriptor"
-	"github.com/opencord/voltha-go/common/log"
+	"github.com/opencord/voltha-lib-go/pkg/log"
 	"io/ioutil"
 	"math"
 	"os"