GS Home Shopping, a leading home shopping channel operator here, said Sunday that it has invested $1.2 million in Luxstay, a Vietnamese home-sharing platform that targets the Southeast Asian market.The deal marks GS Home Shopping's second such investment in an e-commerce startup based in Vietnam. In January this year, the South Korean company invested $3 million in another e-commerce venture firm, Leflair, which focuses on premium-branded products for women, men, children and homes.Vietnam, one