[qa]Proposing Attila Fazekas (afazekas) to Devstack Core list

Hello Everyone, I would like to propose to add Attila Fazekas (afazekas) in devstack core list. He has been contributing and reviewing code in devstack since a long time and has deep knowledge of code base. Please reply with your approval or objections. If no objection then till 5th Aug, I will add him in the list. -gmann