##### 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.
'Boot': {
                    'BootSourceOverrideEnabled': 'Once',
                    'BootSourceOverrideTarget': bootdevice,
                    'BootNext': boot_next
                }
            }
        else:
            if enabled == 'Once' and target == bootdevice:
                
                return {'ret': True, 'changed': False}
            payload = {
                'Boot': {
                    'BootSourceOverrideEnabled': 'Once',
                    'BootSourceOverrideTarget': bootdevice
                }
            }
        response = self.patch_request(self.root_uri + self.systems_uri, payload)
        if response['ret'] is False:
            return response
        return {'ret': True, 'changed': True}
    def set_bios_attributes(self, attributes):
        result = {}
        key = "Bios"
        
        response = self.get_request(self.root_uri + self.systems_uri)
        if response['ret'] is False:
            return response
        result['ret'] = True
        data = response['data']
        if key not in data: