Increase system timeout duration to >2 hours to allow fio to copy over all files

We've noticed fio nearly 2 hours to run, which is causing system timeouts. Let's see if we can dial that down.

david.daly I'm leaving this in your backlog because you guys are probably better equipped to configure fio. Feel free to reassign back if you think it's something we should do.

We might not be able to change fio's runtime, since it needs to copy over the snapshot data. Let's instead look to increase the timeout to give it more time to finish this.