VOL-2189 update voltha-go to use voltha-protos=v2.0.1 and voltha-lib-go=v2.2.9
Release 2.2.1

Change-Id: Ia46863b34c89b32aecdd3a5a8d6505de1b46cf9d
diff --git a/ro_core/core/core.go b/ro_core/core/core.go
index 681c90a..c98e891 100644
--- a/ro_core/core/core.go
+++ b/ro_core/core/core.go
@@ -23,7 +23,7 @@
 	grpcserver "github.com/opencord/voltha-lib-go/v2/pkg/grpc"
 	"github.com/opencord/voltha-lib-go/v2/pkg/log"
 	"github.com/opencord/voltha-lib-go/v2/pkg/probe"
-	"github.com/opencord/voltha-protos/go/voltha"
+	"github.com/opencord/voltha-protos/v2/go/voltha"
 	"google.golang.org/grpc"
 )