TAMPA — Midway through the third period at the Tampa Bay Times Forum the Washington Capitals had built up a three-goal lead. As time ticked down, they would need every last bit of that advantage. The Tampa Bay Lightning scored a pair of goals in the final 7 minutes 58 seconds but couldn’t complete the rally as Braden Holtby and Washington held on for a 4-3 victory and a now three-game winning streak.