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

Change-Id: I86744943d59de38e9285ed7f53adc49c3b047e62
diff --git a/rw_core/graph/device_graph.go b/rw_core/graph/device_graph.go
index 02ad35d..c37cfd0 100644
--- a/rw_core/graph/device_graph.go
+++ b/rw_core/graph/device_graph.go
@@ -23,8 +23,8 @@
 	"sync"
 
 	"github.com/gyuho/goraph"
-	"github.com/opencord/voltha-lib-go/v2/pkg/log"
-	"github.com/opencord/voltha-protos/v2/go/voltha"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	"github.com/opencord/voltha-protos/v3/go/voltha"
 )
 
 func init() {
diff --git a/rw_core/graph/device_graph_test.go b/rw_core/graph/device_graph_test.go
index a4214e9..47d8b99 100644
--- a/rw_core/graph/device_graph_test.go
+++ b/rw_core/graph/device_graph_test.go
@@ -18,8 +18,8 @@
 import (
 	"errors"
 	"fmt"
-	"github.com/opencord/voltha-protos/v2/go/openflow_13"
-	"github.com/opencord/voltha-protos/v2/go/voltha"
+	"github.com/opencord/voltha-protos/v3/go/openflow_13"
+	"github.com/opencord/voltha-protos/v3/go/voltha"
 	"github.com/stretchr/testify/assert"
 	"math/rand"
 	"strconv"