SAN JOSE, Calif. (AP) — Diego Luna scored in the 78th minute Saturday night to help Real Salt Lake beat the San Jose Earthquakes 1-0 to extend its unbeaten streak to five consecutive games. Luna took a pass from Braian Ojeda about 10 yards outside the penalty area and, without much pressure from the Earthquakes defense, ripped a left-footed shot that bounced off the back post into the net to give Real Salt Lake (15-7-11) a 1-0 lead. RSL had 55…