KOENIGSWINTER, Germany (Reuters) -The Group of Seven economic powers support efforts to provide debt relief for Sri Lanka, G7 finance chiefs said on Thursday in a draft communique from a meeting in Germany after the country defaulted on its sovereign debt. The once-booming island country has suspended debt payments as it grapples with its worst economic crisis since it won independence in 1948, facing shortages of essential goods that have triggered social unrest. G7 countries said in their statement they were committed to finding long-term solutions for the Indian Ocean nation and urged it to…