#### SUMMARY
This feature would implement a UpdateUserName command for the Accounts category of redfish_command, to update user name. And also implement a UpdatePasswordPolicy command for the Accounts category of redfish_command to change password policy.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
redfish_command

##### ADDITIONAL INFORMATION
These 2 commands would help user to update user name or update password policy

result = {}
        chassis_results = []
        
        properties = ['ChassisType', 'PartNumber', 'AssetTag',
                      'Manufacturer', 'IndicatorLED', 'SerialNumber', 'Model']
        
        for chassis_uri in self.chassis_uri_list:
            response = self.get_request(self.root_uri + chassis_uri)
            if response['ret'] is False:
                return response
            result['ret'] = True
            data = response['data']
            chassis_result = {}
            for property in properties:
                if property in data:
                    chassis_result[property] = data[property]
            chassis_results.append(chassis_result)
        result["entries"] = chassis_results
        return result
    def get_fan_inventory(self):