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/model_proxy_manager.go b/ro_core/core/model_proxy_manager.go
index 23f4948..23261f5 100644
--- a/ro_core/core/model_proxy_manager.go
+++ b/ro_core/core/model_proxy_manager.go
@@ -21,7 +21,7 @@
 	"github.com/opencord/voltha-lib-go/v2/pkg/db/model"
 	"github.com/opencord/voltha-lib-go/v2/pkg/log"
 	"github.com/opencord/voltha-lib-go/v2/pkg/version"
-	"github.com/opencord/voltha-protos/go/voltha"
+	"github.com/opencord/voltha-protos/v2/go/voltha"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )