[#1764] Limit haalcentraal api requests to subset of available fields

[pi-sigma]

Taiga #1764

[pi-sigma]

I'm not sure that my changes to the mock are entirely correct. When I curl the BRP API with the selected fields (Docker setup, see here) I get the following response:

{
   "type":"RaadpleegMetBurgerservicenummer",
   "personen":[
      {
         "geslacht":{
            "code":"V"
         },
         "naam":{
            "voornamen":"Suzanne",
            "geslachtsnaam":"Moulin",
            "voorletters":"S."
         },
         "geboorte":{
            "plaats":{
               "omschrijving":"Thann"
            },
            "datum":{
               "type":"Datum",
               "datum":"1985-12-01",
               "langFormaat":"1 december 1985"
            }
         },
         "verblijfplaats":{
            "type":"Adres",
            "verblijfadres":{
               "officieleStraatnaam":"Boterdiep",
               "huisnummer":31,
               "postcode":"3077AW",
               "woonplaats":"Rotterdam"
            }
         }
      }
   ]
}

Some of the data is filtered out as intended (geboorte.plaats is correct), but other superfluous stuff is still there (geboorte.datum.langFormaat). The validity of the data needs to be checked on the test environment.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9cac5a4) 92.93% compared to head (a4391f8) 92.93%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #905   +/-   ##
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  Coverage    92.93%   92.93%           
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  Files          819      819           
  Lines        28250    28250           
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  Hits         26255    26255           
  Misses        1995     1995           

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