Regardless of whether the drone had some sort of ordinance, it was likely gathering intel on Israeli defenses and communications - which is why it was taken out. Some think it was going to proceed (had it remained undetected) to a city making a mockery of Israeli defenses.
So it's just as likely the drone was gathering intelligence on the assortment of Sunni Muslim terrorist training camps along Syria's border with Israel.
One way or another those Sunni terrorists are going to get eradicated, whether the Israelis like it or not.