On Wednesday morning, in a sign that the battle against the omicron variant is quickly evolving, de Blasio had few details about when and where new testing sites would open, or how many at-home tests kits the federal government will deliver. Six new mobile testing sites paid for by the feds are expected to open in the coming days, as are seven more that the state will deploy to MTA subway stations.Later on Wednesday, the Centers for Disease Control deployed a new testing unit to Travers Park in Queens, and on Thursday, it expects to send out two more — one to Queens Valley Playground in Flus...