By Caroline Pailliez PARIS (Reuters) -Airport workers went on strike at Paris’ main international airport Roissy-Charles de Gaulle on Friday, forcing the cancellation of about 10% of flights and bringing more disruption to early summer travel. Scores of ground staff protested in front of one terminal to demand a big pay rise to cushion the pain of high inflation, emboldened by booming demand for air travel and staff shortages caused in part by the COVID-19 pandemic. Airport operator ADP told Reuters it expected 100 flights to be cancelled, 50 incoming and 50 departing, over the course of the d…