French union threatens to cut electricity to MPs, billionaires amid nationwide strikePARIS, Jan 18 (Reuters) - France's hardline CGT union has threatened to cut off electricity supplies to lawmakers and billionaires before a nationwide strike on Thursday, in an increasingly acrimonious showdown over the government's plan to raise the retirement age.The proposed bill, announced last week, would see the retirement age pushed to 64 from 62, a move opinion polls show is opposed by a vast majority of workers already facing a cost-of-living crisis."I suggest they also go see the nice properties, the nice castles of billionaires," Philippe Martinez, leader of the CGT, France's second-largest trade union, told France 2 television on Wednesday."It would be good if we cut off their electricity so that they can put themselves, for a few days, in the shoes of ... French people who can't afford to pay their bill."The reform is yet to be adopted in parliament, where President Emmanuel Macron does not have an absolute majority but is hoping to get the votes of the conservative Les Republicains."