Update google.api.http options within networkelement.proto

...ithub.com/openconfig/gnmi/proto/collector/collector.pb.go

....com/openconfig/gnmi/proto/collector/collector_grpc.pb.go

api/go/github.com/openconfig/gnmi/proto/gnmi/gnmi.pb.go

api/go/github.com/openconfig/gnmi/proto/gnmi/gnmi_grpc.pb.go

.../github.com/openconfig/gnmi/proto/gnmi_ext/gnmi_ext.pb.go

api/go/github.com/openconfig/gnmi/proto/target/target.pb.go

.../github.com/openconfig/gnmi/testing/fake/proto/fake.pb.go

...ub.com/openconfig/gnmi/testing/fake/proto/fake_grpc.pb.go

api/go/gosdn/app/app.pb.go

api/go/gosdn/app/app.pb.gw.go

api/go/gosdn/app/app_grpc.pb.go

...sdn/configurationmanagement/configurationmanagement.pb.go

.../configurationmanagement/configurationmanagement.pb.gw.go

...onfigurationmanagement/configurationmanagement_grpc.pb.go

api/go/gosdn/conflict/conflict.pb.go

api/go/gosdn/csbi/csbi.pb.go

api/go/gosdn/csbi/csbi_grpc.pb.go

api/go/gosdn/networkelement/networkelement.pb.go

api/go/gosdn/networkelement/networkelement.pb.gw.go

api/go/gosdn/networkelement/networkelement_grpc.pb.go