Status.included_files not showing up in diagnose output

[jthreefoot-edb]

DiagnoseOutput.servers.status.files_included is in the barman diagnose output, and it is a field in the schema, but this data is not included in the output of the REST endpoint. included_files does not appear to be in any of the model code - maybe we just missed a regen from schema?

[mikewallace1979]

I think we mis-read the schema or the JSON output - included_files can occur as a field of a backup or as a field of the server status. The schema currently only has included_files as a backup property so we need to add it as a server property.