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

Change-Id: Ia4b27695cf7ec3377a64572972998d52b70a0a5f
diff --git a/rw_core/config/config.go b/rw_core/config/config.go
index 5f4a0e0..deae0f3 100644
--- a/rw_core/config/config.go
+++ b/rw_core/config/config.go
@@ -18,7 +18,7 @@
 import (
 	"flag"
 	"fmt"
-	"github.com/opencord/voltha-go/common/log"
+	"github.com/opencord/voltha-lib-go/pkg/log"
 )
 
 // RW Core service default constants