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/rw_core/coreIf/device_manager_if.go b/rw_core/coreIf/device_manager_if.go
index d2e6356..9f9eef4 100644
--- a/rw_core/coreIf/device_manager_if.go
+++ b/rw_core/coreIf/device_manager_if.go
@@ -19,7 +19,7 @@
 */
 package coreIf
 
-import "github.com/opencord/voltha-protos/go/voltha"
+import "github.com/opencord/voltha-protos/v2/go/voltha"
 
 // DeviceManager represents a generic device manager
 type DeviceManager interface {