Uhhh, you sure? When the camera zoomed in on the 'thing' in the tank (which looked like a proto-Snoke), it played a variation of his theme.
Our characters even made a meta-comment on this, like they thought this was going to be a simple operation of shutting down an old Imperial base, but OH SHIT turns out there's far more sinister shit going down.
Maybe I'm wrong, but given the whole Dark Troopers reveal I thought it was all connected.