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/adaptercore/statsmanager.go b/adaptercore/statsmanager.go
index 6a67f15..b2bddd7 100755
--- a/adaptercore/statsmanager.go
+++ b/adaptercore/statsmanager.go
@@ -24,8 +24,8 @@
 	"time"
 
 	"github.com/opencord/voltha-lib-go/v2/pkg/log"
-	"github.com/opencord/voltha-protos/go/openolt"
-	"github.com/opencord/voltha-protos/go/voltha"
+	"github.com/opencord/voltha-protos/v2/go/openolt"
+	"github.com/opencord/voltha-protos/v2/go/voltha"
 )
 
 var mutex = &sync.Mutex{}