Bots don't play the objective.
The bots will spawn in just like normal combat training bots. They also act like combat training bots unfortunately.
They don't play the objective on any objective based game modes. I played Search & Destroy and Domination and none of the bots even sniffed the flags or attempted to plant the bomb. The closest thing that happened was the bot would accidently pick up the bomb running out of spawn.
I have searched and searched and have yet to find an answer.