Tools: improve sitl-on-hw copter handling #670

Job	Run time
build (stm32f7, chibios, 10)	15m 59s
build (stm32h7, chibios, 10)	14m 20s
build (fmuv2-plane, chibios, 10)	8m 1s
build (periph-build, chibios, 10)	14m 34s
build (iofirmware, chibios, 10)	4m 55s
build (CubeOrange-bootloader, chibios, 10)	3m 15s
build (fmuv3-bootloader, chibios, 10)	3m 14s
build (revo-bootloader, chibios, 10)	3m 25s
build (stm32h7-debug, chibios, 10)	9m 19s
build (fmuv3, chibios, 10)	15m 35s
build (revo-mini, chibios, 10)	12m 43s
build (MatekF405-Wing, chibios, 10)	13m 21s
build (CubeOrange-ODID, chibios, 10)	10m 31s
build (CubeRedPrimary-bootloader, chibios, 10)	3m 27s
build (configure-all, chibios, 10)	12m 7s
build (build-options-defaults-test, chibios, 10)	27m 58s
build (signing, chibios, 10)	11m 42s
build (CubeOrange-PPP, chibios, 10)	8m 52s
build (SOHW, chibios, 10)	15m 9s
build (Pixhawk6X-PPPGW, chibios, 10)	5m 24s
build (new-check, chibios, 10)	15m 22s
	3h 49m 13s

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