Correcting Reboot Task Functionality

Modifying fastboot-info.txt to directly call reboot fastboot instead of
reboot userspace -> so no longer need "userspace" in reboot task. Also
moving skip_reboot check to task since in old code we can have
skip_reboot be true and still reboot to bootloader, fastboot, or
recovery

Test: tested reboot commands on Raven
Change-Id: I98ba51747bf7229a88ba737540c81d20b42e5981