quad: wait for each motor test until virtual quad gravity works

quad/scripts/tests/test_safety_checks.rb

@@ -83,7 +83,9 @@ Timeout::timeout(30) {
     motors = get_motor_averages(100, 5)
     spinner.exit
     p motors
-    motors.each { |value| assert_operator(value, :>, THROTTLE_EIGHTH) }
+    # motors.each { |value| assert_operator(value, :>, THROTTLE_EIGHTH) }
+    motors_average = motors.reduce(:+).to_f / 4
+    assert_operator(motors_average, :>, THROTTLE_EIGHTH)
 
     puts("Check that gear switch kills the motors")
     set_gear GEAR_OFF