VOL-1643 Update voltha-go to use voltha-protos and voltha-lib-go v3.0.0

Change-Id: I86744943d59de38e9285ed7f53adc49c3b047e62
diff --git a/ro_core/core/model_proxy.go b/ro_core/core/model_proxy.go
index 56233eb..3775540 100644
--- a/ro_core/core/model_proxy.go
+++ b/ro_core/core/model_proxy.go
@@ -22,7 +22,7 @@
 	"sync"
 
 	"github.com/opencord/voltha-go/db/model"
-	"github.com/opencord/voltha-lib-go/v2/pkg/log"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )