Added disableFreeSan in renew

Testing if we can use disableFreeSan in a reissue request (it's not documented).

Author: dtsander

xolphin/certificate_requests/renew_certificate_request.py

@@ -21,13 +21,15 @@ def __init__(self, product, years, csr, dcv_type):
         self.kvk = ''
         self.reference = ''
         self.language = ''
+        self.disable_free_san = False
 
     def toDict(self):
         result = {
             'product': self.product,
             'years': self.years,
             'csr': self.csr,
             'dcvType': self.dcv_type,
+            'disableFreeSan': int(self.disable_free_san),  # int cast is a workaround, booleans don't work here.
         }
 
         if len(self.subject_alternative_names) > 0: result['subjectAlternativeNames'] = ','.join(self.subject_alternative_names)