By Kiyoshi Takenaka and Hideyuki Sano TOKYO (Reuters) -Japanese Prime Minister Yoshihide Suga's Liberal Democratic Party (LDP) and allies failed to win outright a local election in Tokyo on Sunday that was seen as a key test of voter sentiment ahead of national polls later this year. Public broadcaster NHK said the LDP had won 33 seats in Tokyo's 127-member assembly, just ahead of Tokyo Citizens First, the party of Tokyo Governor Yuriko Koike, with 31 seats. Even with 23 won by its ally Komeito, LDP fell short of an outright majority -- a target that had been considered within reach. The disap...