code: def resolve_configuration(self, configuration):
          
          configuration = configuration if configuration else self.json_config
          self._resolve_requirements(configuration["requirements"])
          self._resolve_dut_count()
docs: Resolve requirements from given JSON encoded data.
          The JSON should follow the testcase meta-data requirements field format. This function
          will resolve requirements for each individual DUT and create a DUT requirements list
          that contains the configuration for each DUT, eg:
          {
              "duts": [
                  { "*": {"count": 2, "type": "process" } }
              ]
          }
          would result in the following configuration:
          [
              { "1": {"type": "process", "allowed_platforms": [], "nick": None }
              { "2": {"type": "process", "allowed_platforms": [], "nick": None }
          ]
  
          :param requirements: optional argument if requirements come from external source,
          should be similar to the following format:
          {
              "duts": [
                  { "*": {"count": 2, "type": "process" } }
              ]
          }