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

Change-Id: I86744943d59de38e9285ed7f53adc49c3b047e62
diff --git a/rw_core/coreif/core_if.go b/rw_core/coreif/core_if.go
index c63a738..78d138b 100644
--- a/rw_core/coreif/core_if.go
+++ b/rw_core/coreif/core_if.go
@@ -25,7 +25,7 @@
 
 	"github.com/opencord/voltha-go/db/model"
 	"github.com/opencord/voltha-go/rw_core/config"
-	"github.com/opencord/voltha-lib-go/v2/pkg/kafka"
+	"github.com/opencord/voltha-lib-go/v3/pkg/kafka"
 )
 
 // Core represent core methods