Figured this out while taking out bases for the Phase 3 FS quest when you have to take down a base and capture a Sith commander. I dont do GCW base take downs so someone please test this and let us know.
No matter what kind of pet you have as long as it can do damage you can send it in to destroy a turret without the turret attacking back. Using the /tellpet command will keep the commands going while your saftly out of range. For some odd reason every now and then the pet will stop attacking and want to come back to you. Spam the /tellpet (attack) about every 10 seconds.