Context:
See OPT-1799. This is the back-end implementation

AT:

• it's possible to filter by open/resolved incidents
• the filters are only applied on the incidents level
• the new filters are added to the rest-API documentation
• The API looks as follows:

{
    ... // bunch of report meta data fields
    reportType: 'process',
    data: {
      filter: 
        [{
           "type": "withOpenIncidentsOnly" // or "withResolvedIncidentsOnly
           "data": {} 
         }, ...]
    }
}