By Kate Abnett BRUSSELS (Reuters) -European companies whose gas supply contracts with Russia stipulate payment in euros or dollars should not meet Russia’s demand for payment in roubles, the European Commission said on Friday. Moscow said on Friday it would not immediately cut gas supply to Europe, after concerns of a supply shock had sharpened on Thursday when Moscow issued a decree requiring foreign buyers of Russian gas to open rouble accounts in state-run Gazprombank or risk being cut off. The European Union’s executive said it was working with energy companies and national governments to …