Calling all testers! New ArduPilot sensor drivers

Andrew Tridgell We have just implemented a major upgrade to the ArduPilot sensor drivers for STM32 based boards (PX4v1, Pixhawk, Pixhawk2, PH2Slim, PixRacer and PixhawkMini). The new sensor drivers are a major departure from the previous drivers which used the PX4/Firmware drivers. The new drivers are all "in-tree" drivers, bringing a common driver layer for ["]