MOSCOW (Reuters) - Russia's largest oil producer, Rosneft , on Friday reported a first-quarter loss of 156 billion roubles ($2.1 billion) hurt by the spread of the coronavirus and a weaker rouble.Rosneft, which accounts for around 40% of Russia's total oil production, also said it cut its oil and gas condensate output in the first three months of the year by 2.2% from the year-earlier period to 4.64 million barrels per day (bpd) due to a global pact to curb output.The global oil industry has..