##### 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_volume_inventory)
    def restart_manager_gracefully(self):
        result = {}
        key = "Actions"
        
        response = self.get_request(self.root_uri + self.manager_uri)
        if response['ret'] is False:
            return response
        result['ret'] = True
        data = response['data']
        action_uri = data[key]["#Manager.Reset"]["target"]
        payload = {'ResetType': 'GracefulRestart'}
        response = self.post_request(self.root_uri + action_uri, payload)
        if response['ret'] is False:
            return response
        return {'ret': True}
    def manage_indicator_led(self, command):