HONG KONG Asian stocks rose Wednesday, tracking gains on Wall Street as investor optimism mounted ahead of a highly anticipated Federal Reserve policy meeting. KEEPING SCORE: Japan’s Nikkei 225 rose 0.9 percent to 18,195.70 and South Korea’s Kospi added 1.8 percent to 1,970.75. Hong Kong’s Hang Seng gained 1.2 percent to 21,702.03. The Shanghai Composite Index…