I've watched the launch video for DM-1 today, and one thing caught my attention. On SuperDraco pods, below the plugged SuperDraco engine openings, there are two more plugged holes. I've marked them on a photo that I've found on https://en.wikipedia.org/wiki/SpX-DM1. Does someone know what is the purpose of these openings? I haven't seen them before on the Dragon 2 capsule used for pad abort test.
A close-up view from here