By Fayaz Bukhari SRINAGAR (Reuters) – At least 16 people have been killed after sudden rains triggered flash floods during an annual Hindu pilgrimage to the cave shrine of Amarnath in Indian Kashmir, a government official said on Saturday. More than two dozen people have been reported missing and rescue operations are underway. “Both army and civilian helicopters are carrying out relentless sorties to evacuate the injured and the dead,” an Indian defence ministry spokesman said in Srinagar. Authorities have suspended the pilgrimage till further notice. During the annual pilgrimage, tens of tho…