AP_Motors_test: add tri frames to json output #38444

Job	Run time
build (stm32f7, chibios, 10)	5m 44s
build (stm32h7, chibios, 10)	5m 12s
build (fmuv2-plane, chibios, 10)	2m 41s
build (periph-build, chibios, 10)	3m 46s
build (iofirmware, chibios, 10)	1m 19s
build (CubeOrange-bootloader, chibios, 10)	1m 9s
build (fmuv3-bootloader, chibios, 10)	55s
build (revo-bootloader, chibios, 10)	1m 5s
build (stm32h7-debug, chibios, 10)	3m 22s
build (fmuv3, chibios, 10)	8m 2s
build (revo-mini, chibios, 10)	6m 33s
build (MatekF405-Wing, chibios, 10)	6m 41s
build (CubeOrange-ODID, chibios, 10)	4m 16s
build (CubeRedPrimary-bootloader, chibios, 10)	50s
build (configure-all, chibios, 10)	9m 34s
build (build-options-defaults-test, chibios, 10)	12m 1s
build (signing, chibios, 10)	3m 36s
build (CubeOrange-PPP, chibios, 10)	2m 59s
build (SOHW, chibios, 10)	4m 59s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 8s
	1h 25m 52s

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