##### 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.
if not any((username, acct_id)):
            return {'ret': False, 'msg':
                    'Must provide either account_id or account_username'}
        response = self.get_request(self.root_uri + self.accounts_uri)
        if response['ret'] is False:
            return response
        data = response['data']
        uris = [a.get('@odata.id') for a in data.get('Members', []) if
                a.get('@odata.id')]
        for uri in uris:
            response = self.get_request(self.root_uri + uri)
            if response['ret'] is False:
                continue
            data = response['data']
            headers = response['headers']
            if username:
                if username == data.get('UserName'):
                    return {'ret': True, 'data': data,
                            'headers': headers, 'uri': uri}
            if acct_id:
                if acct_id == data.get('Id'):
                    return {'ret': True, 'data': data,
                            'headers': headers, 'uri': uri}
        return {'ret': False, 'no_match': True, 'msg':
                'No account with the given account_id or account_username found'}
    def _find_empty_account_slot(self):