init.d-posix: raise timeouts for fast SITL
init.d-posix: raise timeouts for fast SITL

When simulating with lockstep we can raise the speed by setting the env
variable `PX4_SIM_SPEED_FACTOR`. Some inputs like RC, MAVLink heartbeats
from a ground station, or offboard controls via MAVLink are still at the
normal speed which leads to timeouts getting detected in PX4.

To work around this issue we can automatically multiply the timeout
parameters by the speed factor.

mje-nz/PX4-Firmware,dagar/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,PX4/Firmware,krbeverx/Firmware,PX4/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,krbeverx/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,dagar/Firmware,acfloria/Firmware,acfloria/Firmware,krbeverx/Firmware,dagar/Firmware,krbeverx/Firmware,PX4/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,dagar/Firmware,krbeverx/Firmware,dagar/Firmware,acfloria/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware