VOL-3505 Send an ofp_error_msg on flow add/delete error

Change-Id: I3791d4ab7ae0f7730f52988234d0c99af2cea75f
diff --git a/vendor/github.com/opencord/voltha-protos/v4/go/voltha/voltha.pb.go b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/voltha.pb.go
index 217adcf..2ec3452 100644
--- a/vendor/github.com/opencord/voltha-protos/v4/go/voltha/voltha.pb.go
+++ b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/voltha.pb.go
@@ -503,6 +503,7 @@
 // ChangeEvent from public import voltha_protos/openflow_13.proto
 type ChangeEvent = openflow_13.ChangeEvent
 type ChangeEvent_PortStatus = openflow_13.ChangeEvent_PortStatus
+type ChangeEvent_Error = openflow_13.ChangeEvent_Error
 
 // OfpPortNo from public import voltha_protos/openflow_13.proto
 type OfpPortNo = openflow_13.OfpPortNo