LILLE, France (Reuters) -European Union countries agreed on Thursday to oversee the border-free Schengen area through regular ministerial meetings, France said, strengthening political management of the area in the same way euro zone gatherings steer economic policy. Ministers meeting in Lille also agreed with another French proposal, which is to take a step-by-step approach on plans for a reform of the EU’s asylum rules, long stalled over disagreements between the member states, French Interior Minister Gerald Darmanin added. National security concerns, waves of migration and, most recently, …