Jean Genet’s creepy, sexy play “The Maids,” which had its premiere in 1947, has never gone out of fashion. But in the last several years, it has been riding a new wave of interest, with revivals in Europe and Canada and mash-ups like the Off Off Broadway ensemble Sister Sylvester’s forthcoming “The Maids’ The Maids,” whose cast, according to the company, will include two professional housekeepers.