By Maha El Dahan, Alex Lawler and Ahmad Ghaddar LONDON (Reuters) – OPEC and OPEC+ began two days of meetings on Wednesday with sources saying a big policy change was unlikely this month. At its last gathering in early June, OPEC+ decided to raise output each month by 648,000 barrels per day (bpd) in July and August, compared with a previous plan to add 432,000 bpd over three months. OPEC+ consists of the Organization of the Petroleum Exporting Countries and allies such as Russia. Washington welcomed the producers’ decision in June that followed months of pressure from the West on OPEC+ to rais…