BERLIN (Reuters) - Chancellor Angela Merkel said on Thursday she would urge Greece's prime minister to stick with tough reforms when they meet in Berlin on Friday while awaiting a report from the 'troika' of international lenders on Athens' progress. "It is important for me that we all stay true to our commitments and above all wait for the troika report to see what the result is," Merkel told reporters before a dinner with French President Francois Hollande at which the two leaders will fine tune their stance towards Athens. ...