PX4 unit tests

unittest.sh

#!/bin/bash

export PX4_SIM_MODEL=unittest
export PX4_START_MODULES=start_modules.rc

# log file without mission and several different main states:
export replay=/home/david/Downloads/07370005-60a6-4a60-8d24-b86849a5c042.ulg

make px4_sitl_unittest
export PX4_BUILD_UNITTEST=$(pwd)/build/px4_sitl_unittest_replay

export PX4_RC_FILE=${PX4_BUILD_UNITTEST}/etc/init.d-posix/start_modules.rc

publisher_rules_file="orb_publisher.rules"
cat <<EOF > "$publisher_rules_file"
restrict_topics: battery_status, manual_control_setpoint, sensor_combined, vehicle_gps_position, vehicle_land_detected, vehicle_local_position, vehicle_global_position
module: replay
ignore_others: false
EOF

cat <<EOT > $PX4_RC_FILE
commander start
replay trystart
logger start -f
EOT

${PX4_BUILD_UNITTEST}/bin/px4 ${PX4_BUILD_UNITTEST}/etc -s etc/init.d-posix/rcS