STM32 test: var LIBUAVCAN_REPO_ROOT
STM32 test: var LIBUAVCAN_REPO_ROOT

trigrass2/libuavcan,3drobotics/libuavcan,soulsheng/libuavcan,3drobotics/libuavcan,trigrass2/libuavcan,ilia-sheremet/uavcan,ilia-sheremet/uavcan,diydrones/uavcan,ilia-sheremet/uavcan,ilia-sheremet/uavcan,PX4/uavcan,PX4/uavcan,3drobotics/libuavcan,soulsheng/libuavcan,cvra/uavcan,diydrones/uavcan,cvra/uavcan,cvra/uavcan,cvra/uavcan,trigrass2/libuavcan,soulsheng/libuavcan,PX4/uavcan,diydrones/uavcan,3drobotics/libuavcan,soulsheng/libuavcan,PX4/uavcan,trigrass2/libuavcan,diydrones/uavcan