I had guessed this once before on another thread about this. I "think" they are for mounting the bunk end fans.
Is there a 12v plug in the ceiling nearby? These look like they would match the two clips on the back of the standard bunk fan that would normally attach to the shepherd pole on a tented hybrid.
That's all I got.
And welcome to JOF! Once you get an answer to this, stick around and we'll you with all kinds of good opinions, er, information.