I get empty fields marshalled when switching from older gentool and app-toolkit to newer tooling

[seizadi]

Here is a sample message as seen from client from old tooling:

{"id":"EC2","aggregation":[104732,107374],"entities":{}}

Versus new tooling:

{"type":"","id":"EC2","aggregation":[69393,59305],"entities":{}}

There are many other fields emitted but just focused on the top level type field as a sample
The autogenerated code have the omit-empty option:

type Entity struct {
....

	Type          string           `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
	Id            string           `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
....
}