VOL-2189 update voltha-openolt-adapter to use voltha-protos=v2.0.1 and voltha-lib-go=v2.2.9;
Release v2.2.1

Change-Id: I527d6541f9d8b7df8504d886a01163c7e57bdd77
diff --git a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/adapters/adapterif/core_proxy_if.go b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/adapters/adapterif/core_proxy_if.go
index 615452c..9286c0d 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v2/pkg/adapters/adapterif/core_proxy_if.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v2/pkg/adapters/adapterif/core_proxy_if.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"github.com/opencord/voltha-protos/go/voltha"
+	"github.com/opencord/voltha-protos/v2/go/voltha"
 )
 
 // CoreProxy interface for voltha-go coreproxy.