docs: def matches_whitelist(self, matches, whitelist):
          '''
          Reads over the matches and returns a matches dict with just the ones
          that are in the whitelist
          '''
          if not whitelist:
              return matches
          ret_matches = {}
          if not isinstance(whitelist, list):
              whitelist = whitelist.split(',')
          for env in matches:
              for sls in matches[env]:
                  if sls in whitelist:
                      ret_matches[env] = ret_matches[env] if env in ret_matches else []
                      ret_matches[env].append(sls)
          return ret_matches