TOKYO (AP) -- It takes tough managers to succeed in Japan's cutthroat instant noodles business, and one company wants to ensure it has the toughest - through ramen noodle boot camp. Newly promoted managers at Nissin Food Products need to survive three days on a tiny, uninhabited island where they will dig their own toilets, make fire from dry leaves, catch their own fish and even carve their chopsticks from local bamboo. The plan is to promote team spirit, perseverance, creativity and an appreciation for the product, said Masanaga Oguchi, spokesman for the Osaka-based ramen noodle maker. "In our daily...