##### SUMMARY
This feature would implement a SetManagerNic command for the Manager category of redfish_config, to update Manager NIC configuration. 

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
redfish_config

##### ADDITIONAL INFORMATION
This command would help user to configure their Manager NIC.
return self.aggregate_systems(self.get_psu_inventory)
    def get_system_inventory(self, systems_uri):
        result = {}
        inventory = {}
        
        properties = ['Status', 'HostName', 'PowerState', 'Model', 'Manufacturer',
                      'PartNumber', 'SystemType', 'AssetTag', 'ServiceTag',
                      'SerialNumber', 'SKU', 'BiosVersion', 'MemorySummary',
                      'ProcessorSummary', 'TrustedModules']
        response = self.get_request(self.root_uri + systems_uri)
        if response['ret'] is False:
            return response
        result['ret'] = True
        data = response['data']
        for property in properties:
            if property in data:
                inventory[property] = data[property]
        result["entries"] = inventory
        return result
    def get_multi_system_inventory(self):